Question: when did the first touch screen smartphone come out
[{'answer': '2007', 'provenance': [{'wikipedia_id': '167079', 'title': 'Smartphone', 'start_paragraph_id': 2, 'start_character': 578, 'end_paragraph_id': 2, 'end_character': 582, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]