Question: who plays malekith in thor the dark world
[{'answer': 'Christopher Eccleston', 'provenance': [{'wikipedia_id': '32267545', 'title': 'Thor: The Dark World', 'start_paragraph_id': 1, 'start_character': 540, 'end_paragraph_id': 1, 'end_character': 561, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32267545', 'title': 'Thor: The Dark World', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 1526, 'bleu_score': 0.9796407732798481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8435877978206211083}, 'section': 'Section::::Cast.\n'}]}]