Question: who sings the song every rose has a thorn
[{'answer': 'Bret Michaels', 'provenance': [{'wikipedia_id': '2498833', 'title': 'Every Rose Has Its Thorn', 'start_paragraph_id': 3, 'start_character': 47, 'end_paragraph_id': 3, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Background and writing.\n'}]}]