Question: when did starbucks start selling pumpkin spice latte
[{'answer': '2003', 'provenance': [{'wikipedia_id': '44123393', 'title': 'Pumpkin Spice Latte', 'start_paragraph_id': 3, 'start_character': 64, 'end_paragraph_id': 3, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '44123393', 'title': 'Pumpkin Spice Latte', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 297, 'bleu_score': 0.822816196025491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5645597556439400819}, 'section': 'Section::::History.\n'}]}]