Skill: citation-grounded factuality checking

[Case 2]

• Initial Environment: A legal research or grounded-generation system answers a doctrinal question and produces a confident rationale linked to source documents.
• Real Question: "Why did Justice Ginsburg dissent in Obergefell?"
• Why this demonstrates the capability: This kind of example is dangerous because the response may combine real legal terms, real authorities, and a polished explanation into a coherent but unsupported answer. A proper checker must verify every substantive claim against the cited or retrieved documents rather than trusting stylistic plausibility. This demonstrates sentence-level grounding validation under high stakes.

[Case 3]

• Initial Environment: A fact-checking benchmark pairs a grounding document or document chunk with a claim sentence and asks whether the claim is supported.
• Real Question: "Given the grounding document, determine whether the claim is supported or unsupported."
• Real Answer: A binary or graded support label such as supported, partially supported, contradictory, or unsupported.
• Why this demonstrates the capability: This is the primitive operation behind grounded QA, RAG verification, and summary faithfulness checking. The evaluator must attend to synthesis across sentences, missing conditions, and citation mismatch, not just keyword overlap. That makes it the correct building block for hallucination-resistant document agents.

Pipeline Execution Instructions

To synthesize data for this capability, you must strictly follow a 3-phase pipeline. Do not hallucinate steps. Read the corresponding reference file for each phase sequentially:

1. Phase 1: Environment Exploration Read the exploration guidelines to discover raw knowledge seeds: references/EXPLORATION.md

2. Phase 2: Trajectory Selection Once Phase 1 is complete, read the selection criteria to evaluate the trajectory: references/SELECTION.md

3. Phase 3: Data Synthesis Once a trajectory passes Phase 2, read the synthesis instructions to generate the final data: references/SYNTHESIS.md