Question: where was the first vancouver folk music festival held
[{'answer': '1978', 'provenance': [{'wikipedia_id': '2259929', 'title': 'Vancouver Folk Music Festival', 'start_paragraph_id': 1, 'start_character': 53, 'end_paragraph_id': 1, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2259929', 'title': 'Vancouver Folk Music Festival', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 232, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15784392806753300950}, 'section': 'Section::::Abstract.'}]}]