Question: who played king theoden in lord of the rings
[{'answer': 'Bernard Hill', 'provenance': [{'wikipedia_id': '163903', 'title': 'Bernard Hill', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '163903', 'title': 'Bernard Hill', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 594, 'bleu_score': 0.9804854598160591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17123247315220066373}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '163903', 'title': 'Bernard Hill', 'section': 'Section::::Career.:Later roles.\n', 'start_paragraph_id': 15, 'end_paragraph_id': 15, 'meta': {'evidence_span': ['Hill', 'Hill became known to a worldwide audience when he was cast in the role of King Théoden of Rohan in Peter Jackson\'s "The Lord of the Rings" film trilogy based on Tolkien\'s novel of the same name.']}}]}]