Question: who played thor in the movie the avengers
[{'answer': 'Christopher Hemsworth', 'provenance': [{'wikipedia_id': '1221476', 'title': 'Chris Hemsworth', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1221476', 'title': 'Chris Hemsworth', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 497, 'bleu_score': 0.789245091950265, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 673960464914608821}, 'section': 'Section::::Abstract.'}]}]