Evidence timestamp

Hi, thank you for this work!

Is the "timestamp" field in the JSON for M3-bench-robot the timestamp at which evidence occurs for answering the question, or when the question is supposed to be asked?

Why are the timestamps equal to the video duration for a lot of the questions? e.g. for living_room_06 questions, all timestamps are 16:10 which is the video duration and not when the evidence occurs. Is there an annotation for when the query evidence ocurred?

Inspect the M3-bench-robot JSON entries for living_room_06 and compare their timestamp values with the video duration and available question or evidence fields. Confirm whether the timestamp denotes evidence time or query time, then document the intended meaning or correct the affected annotations so the timestamps identify the evidence event.

Written by the indexing model from the issue text.