Question: who drove the number 16 car in nascar
[{'answer': 'Gregory Jack Biffle', 'provenance': [{'wikipedia_id': '1637067', 'title': 'Greg Biffle', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1637067', 'title': 'Greg Biffle', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 815, 'bleu_score': 0.7553758873118661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3693987011430405398}, 'section': 'Section::::Abstract.'}]}]