Question: how many season did shaq play in the nba
[{'answer': '19', 'provenance': [{'wikipedia_id': '147726', 'title': "Shaquille O'Neal", 'start_paragraph_id': 1, 'start_character': 52, 'end_paragraph_id': 1, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]