Question: who plays thor's dad in the movie
[{'answer': 'Anthony Hopkins', 'provenance': [{'wikipedia_id': '12673434', 'title': 'Thor (film)', 'start_paragraph_id': 1, 'start_character': 535, 'end_paragraph_id': 1, 'end_character': 550, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12673434', 'title': 'Thor (film)', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 1397, 'bleu_score': 0.992740351871881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5936163497213206803}, 'section': 'Section::::Cast.\n'}]}]