Task: Question Answering
Input (English): To demonstrate the generality of NSA, we further present video captioning, machine translation, and visual question answering experiments on the VATEX, WMT 2014 English-to-German, and VQA-v2 datasets, respectively.  
 Question: What datasets are used for experiments on three other tasks?
Output (English): VATEX, WMT 2014 English-to-German, and VQA-v2 datasets