ResearchBenchmarksQuestion Answering on NQ (Natural Questions) (out-of-domain)Question Answering on NQ (Natural Questions) (out-of-domain)Follow14.3F1 ScoreCGRAG10.76411.68212.613.518Apr 24, 2026Evaluation resultsMethodMethodLinksF1 ScoreRefusal Rate (%)CGRAGSystem=CGRAGSystem=CGRAG2026.0414.36RAG-OnlySystem=RAG-OnlySystem=RAG-Only2026.0413.84GPT-onlySystem=GPT-onlySystem=GPT-only2026.0410.90