Question: what is the largest irrigation canal in india called
[{'answer': 'The Indira Gandhi Canal', 'provenance': [{'wikipedia_id': '4290268', 'title': 'Indira Gandhi Canal', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4290268', 'title': 'Indira Gandhi Canal', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 454, 'bleu_score': 0.8294046319322931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17440943854702282341}, 'section': 'Section::::Abstract.'}]}]