Question: who sculpted the statue of zeus at olympia
[{'answer': 'Greek sculptor Phidias', 'provenance': [{'wikipedia_id': '69796', 'title': 'Statue of Zeus at Olympia', 'start_paragraph_id': 1, 'start_character': 81, 'end_paragraph_id': 1, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]