Question: when did the building of the cpr end
[{'answer': '1885', 'provenance': [{'wikipedia_id': '5959', 'title': 'Canadian Pacific Railway', 'start_paragraph_id': 3, 'start_character': 89, 'end_paragraph_id': 3, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5959', 'title': 'Canadian Pacific Railway', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1156, 'bleu_score': 0.9769311161719021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6012174549688457441}, 'section': 'Section::::Abstract.'}]}]