Remove video-source sentence from benchmark description

README.md

@@ -38,7 +38,7 @@ VideoMemBench evaluates **in-context video memory**: the ability to retrieve and
 - **Episodic dependency:** a later question revisits a visual episode, entity, or event established in an earlier turn.
 - **Answer dependency:** a later question builds on an earlier answer, requiring information carried through the conversation.
 
-Dependencies are checked for necessity and non-leakage, and answers must be visually grounded. A planner, generator, and judger construct and check dialogues, followed by human expert review. Videos are drawn from Video-MME, VSI-Bench, Video-MMMU, LongVideoBench, EgoLife, and YouTube. See the [paper](https://arxiv.org/html/2610.40131v1) for construction and collection details.
+Dependencies are checked for necessity and non-leakage, and answers must be visually grounded. A planner, generator, and judger construct and check dialogues, followed by human expert review. See the [paper](https://arxiv.org/html/2610.40131v1) for construction and collection details.
 
 ## Leaderboard