Question: when was the first dog sent to space
[{'answer': 'Laika', 'provenance': [{'wikipedia_id': '18739', 'title': 'Laika', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18739', 'title': 'Laika', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 317, 'bleu_score': 0.8812636382525271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13042451026430931112}, 'section': 'Section::::Abstract.'}]}]