Question: who is the sponsoring bank for the pandian gramin bank
[{'answer': 'Indian Overseas Bank', 'provenance': [{'wikipedia_id': '42069775', 'title': 'Pandyan Grama Bank', 'start_paragraph_id': 1, 'start_character': 568, 'end_paragraph_id': 1, 'end_character': 588, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42069775', 'title': 'Pandyan Grama Bank', 'start_paragraph_id': 1, 'start_character': 221, 'end_paragraph_id': 1, 'end_character': 840, 'bleu_score': 0.8995254298368741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9642188221728248318}, 'section': 'Section::::Abstract.'}]}]