Question: when did great adventure in jackson nj open
[{'answer': '1974', 'provenance': [{'wikipedia_id': '250296', 'title': 'Six Flags Great Adventure', 'start_paragraph_id': 2, 'start_character': 19, 'end_paragraph_id': 2, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '250296', 'title': 'Six Flags Great Adventure', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 152, 'bleu_score': 0.9243880458347601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3541614812971906713}, 'section': 'Section::::Abstract.'}]}]