Question: when did ivan the gorilla leave the b i
[{'answer': '1994', 'provenance': [{'wikipedia_id': '38810107', 'title': 'Ivan (gorilla)', 'start_paragraph_id': 2, 'start_character': 140, 'end_paragraph_id': 2, 'end_character': 144, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '38810107', 'title': 'Ivan (gorilla)', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 241, 'bleu_score': 0.9517713210466091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15874485155701401666}, 'section': 'Section::::Animal Welfare Controversy.\n'}]}]