Question: who sings don't cha wish your girlfriend
[{'answer': 'The Pussycat Dolls', 'provenance': [{'wikipedia_id': '2372941', 'title': "Don't Cha", 'start_paragraph_id': 1, 'start_character': 54, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2372941', 'title': "Don't Cha", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 620, 'bleu_score': 0.9132525811128761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14360667260219205730}, 'section': 'Section::::Abstract.'}]}]