Question: how many teams are in the nit tournament 2018
[{'answer': '32', 'provenance': [{'wikipedia_id': '54365416', 'title': '2018 National Invitation Tournament', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 81, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]