Question: when did the united church of canada form
[{'answer': '1925', 'provenance': [{'wikipedia_id': '252364', 'title': 'United Church of Canada', 'start_paragraph_id': 2, 'start_character': 33, 'end_paragraph_id': 2, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '252364', 'title': 'United Church of Canada', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 514, 'bleu_score': 0.622450276474107, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18037434953062010982}, 'section': 'Section::::Abstract.'}]}]