Question: how many rounds are in the wnba draft
[{'answer': '3', 'provenance': [{'wikipedia_id': '849824', 'title': 'WNBA draft', 'start_paragraph_id': 3, 'start_character': 363, 'end_paragraph_id': 3, 'end_character': 364, 'bleu_score': 1.0, 'section': 'Section::::Eligibility.\n'}]}]