Question: when did belly-dance become popular in the us
[{'answer': '1893', 'provenance': [{'wikipedia_id': '33942364', 'title': 'Belly dance', 'start_paragraph_id': 35, 'start_character': 102, 'end_paragraph_id': 35, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Outside the Middle East.:In North America.\n'}]}, {'provenance': [{'wikipedia_id': '33942364', 'title': 'Belly dance', 'start_paragraph_id': 35, 'start_character': 0, 'end_paragraph_id': 35, 'end_character': 535, 'bleu_score': 0.922091510134012, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5902137853080627495}, 'section': 'Section::::Outside the Middle East.:In North America.\n'}]}]