Question: how long is the grand haven musical fountain
[{'answer': '25 to 30 minutes', 'provenance': [{'wikipedia_id': '3692235', 'title': 'Grand Haven Musical Fountain', 'start_paragraph_id': 1, 'start_character': 382, 'end_paragraph_id': 1, 'end_character': 398, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3692235', 'title': 'Grand Haven Musical Fountain', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 398, 'bleu_score': 0.972782728923768, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4156648127940966460}, 'section': 'Section::::Abstract.'}]}]