Question: who sang tik tok and we r who we r
[{'answer': 'Kesha', 'provenance': [{'wikipedia_id': '29185700', 'title': 'We R Who We R', 'start_paragraph_id': 1, 'start_character': 45, 'end_paragraph_id': 1, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29185700', 'title': 'We R Who We R', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 583, 'bleu_score': 0.9817332376369081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4998379656297278073}, 'section': 'Section::::Abstract.'}]}]