Question: where did they come up with black friday
[{'answer': 'Philadelphia', 'provenance': [{'wikipedia_id': '366477', 'title': 'Black Friday (shopping)', 'start_paragraph_id': 5, 'start_character': 148, 'end_paragraph_id': 5, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '366477', 'title': 'Black Friday (shopping)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 572, 'bleu_score': 0.979484453366057, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3374578165689134479}, 'section': 'Section::::Abstract.'}]}]