Question: in which city of harappan civilization was the great granary excavated
[{'answer': 'Mohenjo - daro', 'provenance': [{'wikipedia_id': '77495', 'title': 'Mohenjo-daro', 'start_paragraph_id': 40, 'start_character': 4, 'end_paragraph_id': 40, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Conservation and current state.:2014 Sindh Festival.\n'}]}, {'provenance': [{'wikipedia_id': '77495', 'title': 'Mohenjo-daro', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 1054, 'bleu_score': 0.9054931315779121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8825426719734461689}, 'section': 'Section::::Architecture and urban infrastructure.:Major buildings.\n'}]}]