Question: when did macbook pro 13 inch come out
[{'answer': 'June 8 , 2009', 'provenance': [{'wikipedia_id': '3677824', 'title': 'MacBook Pro', 'start_paragraph_id': 21, 'start_character': 53, 'end_paragraph_id': 21, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Second generation (Unibody).:Updates.\n'}]}, {'answer': 'October 2008', 'provenance': [{'wikipedia_id': '3677824', 'title': 'MacBook Pro', 'start_paragraph_id': 3, 'start_character': 127, 'end_paragraph_id': 3, 'end_character': 139, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3677824', 'title': 'MacBook Pro', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 1443, 'bleu_score': 0.752921226447943, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 109500463438236704}, 'section': 'Section::::Second generation (Unibody).:Updates.\n'}]}, {'provenance': [{'wikipedia_id': '3677824', 'title': 'MacBook Pro', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 364, 'bleu_score': 0.854450709419842, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 109500463438236704}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3677824', 'title': 'MacBook Pro', 'section': 'Section::::Abstract.', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['The product\'s second iteration, known as the "unibody" model, has a casing made from a single piece of aluminum. It debuted in October 2008, in 13- and 15-inch screen sizes. In January 2009, the 17-inch model was updated with the same unibody design. Subsequent updates brought upgraded Intel Core i5 and i7 processors and introduced Intel\'s Thunderbolt technology.', 'in October 2008, in 13- and 15-inch screen sizes. In January 2009, the 17-inch model was updated', 'The product\'s second iteration, known as the "unibody" model, has a casing made from a single piece of aluminum. It debuted in October 2008, in 13- and 15-inch screen sizes. In January 2009, the 17-inch model was updated with the same unibody design']}}]}]