Question: who played bb 8 in the force awakens
[{'answer': 'Bill Hader', 'provenance': [{'wikipedia_id': '44685054', 'title': 'BB-8', 'start_paragraph_id': 12, 'start_character': 44, 'end_paragraph_id': 12, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Conception.:Voice.\n'}]}, {'answer': 'Ben Schwartz', 'provenance': [{'wikipedia_id': '44685054', 'title': 'BB-8', 'start_paragraph_id': 12, 'start_character': 59, 'end_paragraph_id': 12, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Conception.:Voice.\n'}]}, {'provenance': [{'wikipedia_id': '44685054', 'title': 'BB-8', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 267, 'bleu_score': 0.6814091656094261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3723093079379037694}, 'section': 'Section::::Conception.:Voice.\n'}]}]