Retrieval-Augmented Legal QA
Retrieval-Augmented Legal QA
Questions, scope, retrieval, source selection, passages, claims, citations, quotation verification, entailment, conflicts, freshness, answers, uncertainty, abstention, audit, and human review.
Structured Visual
Jurisdiction: US; as of 2026-08-28; not legal advice; Render structure, refuse interpretation, cite, abstain, and hand off.
RENDER STRUCTURE · REFUSE INTERPRETATION · CITE · ABSTAIN · HAND-OFF: render structure, refuse interpretation, cite provenance, abstain when unsupported, and hand off to human review.
Scope and honesty note
Jurisdiction: United States computational-law classroom model; source snapshot 2026-08-28; curriculum as of 2026-08-29. Synthetic inputs, code, labels, measurements and outputs are teaching artifacts, not law, legal advice, authority, eligibility, benefits, tax, court, filing, research, ranking, or outcome determinations. Code encodes selected interpretations and can be incomplete, wrong, outdated, biased, overprecise, underinclusive, or non-isomorphic. The system must cite source and version, expose assumptions and gaps, abstain when unsupported, and hand legal judgment to accountable humans.
See the essential structure first
Start with this deliberately incomplete structure, then use the pinned authorities, worked application, exceptions, and handoff below. This deliberately incomplete preview has 4 nodes; exceptions and legal consequences remain in the sourced prose below.
Jurisdiction: US; as of 2026-08-28; not legal advice; Render structure, refuse interpretation, cite, abstain, and hand off.
RENDER STRUCTURE · REFUSE INTERPRETATION · CITE · ABSTAIN · HAND-OFF: render structure, refuse interpretation, cite provenance, abstain when unsupported, and hand off to human review.
Begin with computational-law doctrine
Retrieval-augmented legal QA is only as grounded as its claim-to-source verification. Retrieval scores and citation edges select candidates; they do not entail answers. Answers should decompose into atomic claims, link each to exact passages, verify quotations and citations, check jurisdiction, hierarchy, date and version, seek contrary authority, expose conflicts and abstain where support is missing. A citation-rich answer can still be wrong if sources are irrelevant, outdated or do not support the proposition. No case outcome is predicted.
Grounded statutory answer source
The full text supports claims about reviewing-court duties and standards only where exact passages entail them. Pinned source or measurement: “§706. Scope of review To the extent necessary to decision and when presented, the reviewing court shall decide all relevant questions of law, interpret constitutional and statutory provisions, and determine the meaning or applicability of the terms of an agency action. The reviewing court shall- (1) compel agency action unlawfully withheld or unreasonably delayed; and (2) hold unlawful and set aside agency action, findings, and conclusions found to be- (A) arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law; (B) contrary to constitutional right, power, privilege, or immunity; (C) in excess of statutory jurisdiction, authority, or limitations, or short of statutory right; (D) without observance of procedure required by law; (E) unsupported by substantial evidence in a case subject to sections 556 and 557 of this title or otherwise reviewed on the record of an agency hearing provided by statute; or (F) unwarranted by the facts to the extent that the facts are subject to trial de novo by the reviewing court. In making the foregoing determinations, the court shall review the whole record or those parts of it cited by a party, and due account shall be taken of the rule of prejudicial error. ( Pub. L. 89–554, Sept. 6, 1966, 80 Stat. 393 .)” Coordinate: 5 U.S.C. § 706; https://www.neochart.com/catalog/federal/title_5/section_706/title5_sec706_9a580d7b5bc7/706_scope_of_review_to_the_extent_necessary_to_decision_and_0001/index.html; data via neochart.com, snapshot 2026-08.
Grounded tax answer source
The broad rule and enumeration support bounded answers while exclusions and taxpayer treatment require other sources. Pinned source or measurement: “§61. Gross income defined (a) General definition Except as otherwise provided in this subtitle, gross income means all income from whatever source derived, including (but not limited to) the following items: (1) Compensation for services, including fees, commissions, fringe benefits, and similar items; (2) Gross income derived from business; (3) Gains derived from dealings in property; (4) Interest; (5) Rents; (6) Royalties; (7) Dividends; (8) Annuities; (9) Income from life insurance and endowment contracts; (10) Pensions; (11) Income from discharge of indebtedness; (12) Distributive share of partnership gross income; (13) Income in respect of a decedent; and (14) Income from an interest in an estate or trust. (b) Cross references For items specifically included in gross income, see part II (sec. 71 and following). For items specifically excluded from gross income, see part III (sec. 101 and following). (Aug. 16, 1954, ch. 736, 68A Stat. 17 ; Pub. L. 98–369, div. A, title V, §531(c), July 18, 1984, 98 Stat. 884 ; Pub. L. 115–97, title I, §11051(b)(1)(A), Dec. 22, 2017, 131 Stat. 2089 .)” Coordinate: 26 U.S.C. § 61; https://www.neochart.com/catalog/federal/tax/title_26/chapter_1/section_61/title26_sec61_bcd7ff77d1ff/61_gross_income_defined_0001/index.html; data via neochart.com, snapshot 2026-08.
Graph retrieval coordinate
Citation edges can expand retrieval but cannot support an answer unless retrieved passages themselves entail the claim. Pinned source or measurement: “[{"from": "/f-supp-2d/692/0170-01", "fromDate": "2010-03-09", "fromName": "Watkins v. Omni Life Science, Inc.", "to": "/us/559/0077-01", "type": "cites"}, {"from": "/f-supp-2d/712/0924-01", "fromDate": "2010-05-17", "fromName": "In re Arrowhead Capital Management LLC Class Litigation", "to": "/us/559/0077-01", "type": "cites"}, {"from": "/f-supp-2d/718/0805-01", "fromDate": "2010-03-10", "fromName": "Astra Oil Trading NV v. Petrobras America Inc.", "to": "/us/559/0077-01", "type": "cites"}]” Coordinate: case-citations-hertz-inbound-slice as of 2026-08-28; https://www.neochart.com/catalog/cases/us/volume_559/0077_01/index.html; data via neochart.com, snapshot 2026-08.
Pin the synthetic computational record
A synthetic grounded-QA packet records the question and scope, exact and hybrid queries, candidates and passages, primary-source metadata, claim decomposition, quote and citation checks, support and contradiction labels, missing authority, contrary search, answer sentences, citations, abstentions, model and corpus versions, reviewer edits and correction history.
Work the audited application
The answer can quote and enumerate standards directly from section Seven-Zero-Six. It cannot say the newest citing case controls the hypothetical state dispute merely because an edge exists; jurisdiction, holding and posture are unproven. That claim is abstained. A tax question about a named exclusion retrieves section Sixty-One but remains unsupported until the specific exclusion provision is found.
Read the populated computational artifact
The grounded-QA record contains question, jurisdiction, as-of, task, fact, assumption, query, corpus, filter, candidate, passage, score, source type, citation, URL, version, primary source, atomic claim, support span, quote, quote check, paraphrase, entailment, partial support, contradiction, unsupported, inference, contrary search, conflict, answer sentence, caveat, abstention, prompt, model version, retrieval run, reviewer edit, correction, and audit history. The artifact contains 17 populated rows.
Jurisdiction: US; as of 2026-08-28; not legal advice; Render structure, refuse interpretation, cite, abstain, and hand off.
RENDER STRUCTURE · REFUSE INTERPRETATION · CITE · ABSTAIN · HAND-OFF: render structure, refuse interpretation, cite provenance, abstain when unsupported, and hand off to human review.
Read the complete record
The complete record keeps sources, stated facts, and questions for review separate. Pinned sources and measurements: Verbatim text or bounded snapshot data. 5 U.S.C. § 706: Grounded statutory answer source: The full text supports claims about reviewing-court duties and standards only where exact passages entail them.. 26 U.S.C. § 61: Grounded tax answer source: The broad rule and enumeration support bounded answers while exclusions and taxpayer treatment require other sources.. case-citations-hertz-inbound-slice as of 2026-08-28: Graph retrieval coordinate: Citation edges can expand retrieval but cannot support an answer unless retrieved passages themselves entail the claim.. Synthetic computational record: Classroom inputs and intermediate states. Question: What standards appear in section Seven-Zero-Six and does the newest citing case control a hypothetical state dispute. Retrieval: Exact statute leaf, cited-by edge records, case passages, jurisdiction and date filters, source versions and conflicting commentary. Answer plan: Atomic claims, supporting passages, citations, quote checks, entailment status, missing authority, caveat, abstained claim and reviewer. Audit trace: Semantics, provenance, execution, evidence, limits and handoff. Question analysis: User text, jurisdiction, date, authority type, task, facts, assumptions, requested output and high-stakes boundary. Retrieval: Corpus snapshot, query, filters, candidate, passage, score, citation, provenance, duplicate, invalid category and coverage gap. Source selection: Primary source preference, jurisdiction, hierarchy, precedential status left to legal analysis, date, validity, directness and completeness. Claim graph: Atomic claim, passage id, exact support, contradiction, partial support, unsupported, inference, quote, paraphrase and citation. Verification: Open source, locate passage, compare quote, verify citation, check jurisdiction and version, assess entailment, search contrary source and record result. Answer: Supported proposition, scope, uncertainty, conflict, no-outcome framing, cited paragraph, omitted unsupported material and abstention. Audit and handoff: Prompt, retrieval run, model version, source bundle, claims, edits, reviewer, feedback, correction and reproducibility.
Narrow summary
Retrieve candidates, verify every atomic claim against exact current passages, search contrary sources, cite scope precisely, and abstain whenever support or authority is missing.