Question: when was the ibm xt microcomputer released in the market
[{'answer': 'March 8 , 1983', 'provenance': [{'wikipedia_id': '33731003', 'title': 'IBM Personal Computer XT', 'start_paragraph_id': 1, 'start_character': 188, 'end_paragraph_id': 1, 'end_character': 202, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33731003', 'title': 'IBM Personal Computer XT', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 583, 'bleu_score': 0.9808590314834971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14827970792513473852}, 'section': 'Section::::Abstract.'}]}]