Question: when was the first chimp sent into space
[{'answer': 'on January 31 , 1961', 'provenance': [{'wikipedia_id': '154291', 'title': 'Ham (chimpanzee)', 'start_paragraph_id': 1, 'start_character': 143, 'end_paragraph_id': 1, 'end_character': 163, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '154291', 'title': 'Ham (chimpanzee)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 522, 'bleu_score': 0.919275677905046, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9380261968047282535}, 'section': 'Section::::Abstract.'}]}]