Question: what is the name of thor's hammer in the movie
[{'answer': 'Mjolnir', 'provenance': [{'wikipedia_id': '12673434', 'title': 'Thor (film)', 'start_paragraph_id': 7, 'start_character': 153, 'end_paragraph_id': 7, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '12673434', 'title': 'Thor (film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 767, 'bleu_score': 0.801530542331898, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7683326880345510849}, 'section': 'Section::::Abstract.'}]}]