Question: how many stanzas are there in pakistan national anthem
[{'answer': 'three', 'provenance': [{'wikipedia_id': '445924', 'title': 'Qaumi Taranah', 'start_paragraph_id': 9, 'start_character': 67, 'end_paragraph_id': 9, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Music.\n'}]}, {'provenance': [{'wikipedia_id': '445924', 'title': 'Qaumi Taranah', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 318, 'bleu_score': 0.8951060736070181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1579789665687631959}, 'section': 'Section::::Lyrics.:Urdu original.\n'}]}]