Question: who is the phone carrier for straight talk
[{'answer': 'TracFone Wireless , Inc.', 'provenance': [{'wikipedia_id': '1652437', 'title': 'TracFone Wireless', 'start_paragraph_id': 63, 'start_character': 0, 'end_paragraph_id': 63, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::All brands.:Company background.\n'}]}]