Question: when did canada sign the un declaration on the rights of indigenous peoples
[{'answer': '2016', 'provenance': [{'wikipedia_id': '13258879', 'title': 'Declaration on the Rights of Indigenous Peoples', 'start_paragraph_id': 3, 'start_character': 145, 'end_paragraph_id': 3, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13258879', 'title': 'Declaration on the Rights of Indigenous Peoples', 'start_paragraph_id': 70, 'start_character': 0, 'end_paragraph_id': 70, 'end_character': 814, 'bleu_score': 0.983672097934538, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1564322593777133325}, 'section': 'Section::::Reaction.:Criticism, defiance and "aspirational" nullification.:Canada.\n'}]}]