Question: who was the ground-breaking cinematographer on citizen kane
[{'answer': 'Orson Welles', 'provenance': [{'wikipedia_id': '5224', 'title': 'Citizen Kane', 'start_paragraph_id': 1, 'start_character': 54, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5224', 'title': 'Citizen Kane', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 834, 'bleu_score': 0.7972398359167161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8953133166038376506}, 'section': 'Section::::Abstract.'}]}]