Compliance requires that every claim be traceable to a...

Adding an instruction to the system prompt is insufficient for strict compliance because it does not enforce a hard constraint. A robust solution requires a verification architecture: retrieval must be the sole source of facts, and every claim must be mapped to a specific span in the source document. Implement an entailment check to verify the claim against the span and include an abstention mechanism when evidence is missing. Finally, negotiate the compliance requirement; since models inherently use parametric knowledge to parse language, the goal should be that every asserted claim is entailed by a cited span.