Question: when were computers first sold to the public
[{'answer': '1977', 'provenance': [{'wikipedia_id': '25122906', 'title': 'Home computer', 'start_paragraph_id': 1, 'start_character': 73, 'end_paragraph_id': 1, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25122906', 'title': 'Home computer', 'start_paragraph_id': 1, 'start_character': 136, 'end_paragraph_id': 1, 'end_character': 874, 'bleu_score': 0.8709830106272891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17456412016719150727}, 'section': 'Section::::Abstract.'}]}]