Question: where was west side story initially performed before its broadway premiere
[{'answer': 'Washington , D.C.', 'provenance': [{'wikipedia_id': '33928', 'title': 'West Side Story', 'start_paragraph_id': 90, 'start_character': 251, 'end_paragraph_id': 90, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Productions.:2009 Broadway revival.\n'}]}, {'answer': 'Philadelphia', 'provenance': [{'wikipedia_id': '33928', 'title': 'West Side Story', 'start_paragraph_id': 80, 'start_character': 38, 'end_paragraph_id': 80, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Productions.:Original Broadway production.\n'}]}, {'provenance': [{'wikipedia_id': '33928', 'title': 'West Side Story', 'start_paragraph_id': 80, 'start_character': 0, 'end_paragraph_id': 80, 'end_character': 1161, 'bleu_score': 0.9199838042574391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14149878348650533507}, 'section': 'Section::::Productions.:Original Broadway production.\n'}]}]