Question: who played george in back to the future
[{'answer': 'Glover', 'provenance': [{'wikipedia_id': '399146', 'title': 'Crispin Glover', 'start_paragraph_id': 0, 'start_character': 8, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '399146', 'title': 'Crispin Glover', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 511, 'bleu_score': 0.8642573948157951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5582700311569199173}, 'section': 'Section::::Abstract.'}]}]