Question: who is the head of gram panchayat called
[{'answer': 'sarpanch', 'provenance': [{'wikipedia_id': '2340006', 'title': 'Gram panchayat', 'start_paragraph_id': 1, 'start_character': 183, 'end_paragraph_id': 1, 'end_character': 191, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2340006', 'title': 'Gram panchayat', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 211, 'bleu_score': 0.8494499530473011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8704353371700641262}, 'section': 'Section::::Abstract.'}]}]