Question: when did the first ibm personal computer debut
[{'answer': 'August 12 , 1981', 'provenance': [{'wikipedia_id': '15032', 'title': 'IBM Personal Computer', 'start_paragraph_id': 1, 'start_character': 191, 'end_paragraph_id': 1, 'end_character': 207, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15032', 'title': 'IBM Personal Computer', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 352, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1933964316493577875}, 'section': 'Section::::Abstract.'}]}]