Question: what did the scarecrow need on wizard of oz
[{'answer': 'a brain', 'provenance': [{'wikipedia_id': '642339', 'title': 'Scarecrow (Oz)', 'start_paragraph_id': 1, 'start_character': 189, 'end_paragraph_id': 1, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '642339', 'title': 'Scarecrow (Oz)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 750, 'bleu_score': 0.9853469949554711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9582990660776295455}, 'section': 'Section::::Abstract.'}]}]