Question: who scripted gandhi's favourite song vaishnav jan to
[{'answer': 'poet Narsinh Mehta', 'provenance': [{'wikipedia_id': '6509104', 'title': 'Vaishnava Jana To', 'start_paragraph_id': 1, 'start_character': 72, 'end_paragraph_id': 1, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6509104', 'title': 'Vaishnava Jana To', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 211, 'bleu_score': 0.547180093058789, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8074835286595173441}, 'section': 'Section::::Abstract.'}]}]