Question: nankana sahib is the popular name for the birthplace of
[{'answer': 'Guru Nanak', 'provenance': [{'wikipedia_id': '77031', 'title': 'Nankana Sahib', 'start_paragraph_id': 1, 'start_character': 157, 'end_paragraph_id': 1, 'end_character': 167, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '77031', 'title': 'Nankana Sahib', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 405, 'bleu_score': 0.9694566079002921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 167134380770214616}, 'section': 'Section::::History.\n'}]}]