Question: when did the pleasure beach in blackpool open
[{'answer': '1896', 'provenance': [{'wikipedia_id': '33787366', 'title': 'Blackpool Pleasure Beach', 'start_paragraph_id': 1, 'start_character': 147, 'end_paragraph_id': 1, 'end_character': 151, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33787366', 'title': 'Blackpool Pleasure Beach', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 555, 'bleu_score': 0.9638930762749001, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10794239071149767795}, 'section': 'Section::::Abstract.'}]}]