Question: when did space mountain open at disney world
[{'answer': 'January 15 , 1975', 'provenance': [{'wikipedia_id': '12996318', 'title': 'Space Mountain (Magic Kingdom)', 'start_paragraph_id': 25, 'start_character': 738, 'end_paragraph_id': 25, 'end_character': 755, 'bleu_score': 1.0, 'section': 'Section::::Building characteristics and sponsorship.:Sponsorship (1975–2004).\n'}]}, {'provenance': [{'wikipedia_id': '12996318', 'title': 'Space Mountain (Magic Kingdom)', 'start_paragraph_id': 1, 'start_character': 44, 'end_paragraph_id': 1, 'end_character': 690, 'bleu_score': 0.8474015248858281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3657150139754230747}, 'section': 'Section::::Abstract.'}]}]