Question: how many team go to the nhl playoffs
[{'answer': '16', 'provenance': [{'wikipedia_id': '10490910', 'title': 'Stanley Cup playoffs', 'start_paragraph_id': 25, 'start_character': 103, 'end_paragraph_id': 25, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::History.:Origins.\n'}]}]