Question: when was the national anthem of pakistan first played
[{'answer': 'on 1 March 1950', 'provenance': [{'wikipedia_id': '445924', 'title': 'Qaumi Taranah', 'start_paragraph_id': 6, 'start_character': 151, 'end_paragraph_id': 6, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '445924', 'title': 'Qaumi Taranah', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 190, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7804058035199205370}, 'section': 'Section::::History.\n'}]}]