Question: when was excel first introduced and for what computer
[{'answer': 'September 30 , 1985', 'provenance': [{'wikipedia_id': '20268', 'title': 'Microsoft Excel', 'start_paragraph_id': 93, 'start_character': 249, 'end_paragraph_id': 93, 'end_character': 268, 'bleu_score': 1.0, 'section': 'Section::::Versions.:Early history.\n'}]}, {'answer': 'Macintosh', 'provenance': [{'wikipedia_id': '20268', 'title': 'Microsoft Excel', 'start_paragraph_id': 93, 'start_character': 236, 'end_paragraph_id': 93, 'end_character': 245, 'bleu_score': 1.0, 'section': 'Section::::Versions.:Early history.\n'}]}, {'provenance': [{'wikipedia_id': '20268', 'title': 'Microsoft Excel', 'start_paragraph_id': 93, 'start_character': 0, 'end_paragraph_id': 93, 'end_character': 747, 'bleu_score': 0.984188478234951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13066514626069249001}, 'section': 'Section::::Versions.:Early history.\n'}]}]