What happened
A research team built a retrieval system that breaks down source documents into explicit question-answer pairs, then uses those pairs to generate answers with clear, traceable citations instead of opaque summaries. This makes it easier to verify where each part of an AI-generated answer actually came from in the original documents.
Why it matters
Most AI systems that pull information from documents currently generate answers by summarizing clusters of text internally—you can't easily tell which sentence came from which document. This system makes that chain of evidence explicit and human-readable, which matters if you need to trust the answer or catch mistakes.