Question: who did the special effects for the fly
[{'answer': 'Chris Walas', 'provenance': [{'wikipedia_id': '456601', 'title': 'The Fly (1986 film)', 'start_paragraph_id': 1, 'start_character': 501, 'end_paragraph_id': 1, 'end_character': 512, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '456601', 'title': 'The Fly (1986 film)', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 340, 'bleu_score': 0.931598023953435, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13567449811294425021}, 'section': 'Section::::Production.\n'}]}]