Question: what is the legal age to vote in canada
[{'answer': '18', 'provenance': [{'wikipedia_id': '630522', 'title': 'Voting age', 'start_paragraph_id': 1, 'start_character': 170, 'end_paragraph_id': 1, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]