Question: when was the first smartphone released in the us
[{'answer': 'the T - Mobile Sidekick', 'provenance': [{'wikipedia_id': '167079', 'title': 'Smartphone', 'start_paragraph_id': 19, 'start_character': 146, 'end_paragraph_id': 19, 'end_character': 168, 'bleu_score': 1.0, 'section': 'Section::::History.:Early smartphones.\n'}]}, {'provenance': [{'wikipedia_id': '167079', 'title': 'Smartphone', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 437, 'bleu_score': 0.705527410434972, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 910421053231245301}, 'section': 'Section::::History.:Early smartphones.\n'}]}]