Question: who plays the scarecrow in the original wizard of oz
[{'answer': 'Ray Bolger', 'provenance': [{'wikipedia_id': '642339', 'title': 'Scarecrow (Oz)', 'start_paragraph_id': 33, 'start_character': 65, 'end_paragraph_id': 33, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Film portrayals.:"The Wizard of Oz".\n'}]}]