Question: when was the first in vitro baby born
[{'answer': '25 July 1978', 'provenance': [{'wikipedia_id': '353339', 'title': 'Louise Brown', 'start_paragraph_id': 1, 'start_character': 23, 'end_paragraph_id': 1, 'end_character': 35, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '353339', 'title': 'Louise Brown', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 159, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5750646618171815327}, 'section': 'Section::::Abstract.'}]}]