| You are given 4 video clips, each from a different academic paper presentation. Each video is associated with a specific research paper. | |
| You are also given 4 questions. Each question is an "understanding question" derived from the corresponding paper, designed to test comprehension of that presentation. | |
| Additionally, a query is provided — an image. The query is the speaker head portrait. | |
| Your task is to choose the most relevant question (from the 4 provided) that matches the speaker of the query. | |
| Respond with the number (1–4) of the selected question and a brief explanation (1–2 sentences) justifying your choice in following format strictly: | |
| My choice: x. Explanation | |