Question: how long is an nba 3 point line
[{'answer': '23 feet 9 inches'}, {'provenance': [{'wikipedia_id': '2214267', 'title': 'Three-point field goal', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 673, 'bleu_score': 0.5552679948617151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14739853292796793249}, 'section': 'Section::::Abstract.'}]}]