Question: when was the canadian pacific railway started and finished
[{'answer': 'between 1881 and 1885', 'provenance': [{'wikipedia_id': '5959', 'title': 'Canadian Pacific Railway', 'start_paragraph_id': 3, 'start_character': 72, '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': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15255626372313082647}, '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': 0.9640574723612981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15255626372313082647}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5959', 'title': 'Canadian Pacific Railway', 'section': 'Section::::Abstract.', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['The railway was first built between eastern Canada and British Columbia between 1881 and 1885 (connecting with Ottawa Valley and Georgian Bay area lines built earlier), fulfilling a promise extended to British Columbia when it entered Confederation in 1871.', '1881 and 1885', 'The railway was first built between eastern Canada and British Columbia between 1881 and 1885 (connecting with Ottawa Valley and Georgian Bay area lines built earlier),']}}]}]