Question: what is the population of toronto ontario canada
[{'answer': '2,731,571', 'provenance': [{'wikipedia_id': '64646', 'title': 'Toronto', 'start_paragraph_id': 1, 'start_character': 104, 'end_paragraph_id': 1, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]