Question: who sang the song mrs brown you have a lovely daughter
[{'answer': "Herman 's Hermits", 'provenance': [{'wikipedia_id': '6475255', 'title': "Mrs. Brown, You've Got a Lovely Daughter", 'start_paragraph_id': 2, 'start_character': 41, 'end_paragraph_id': 2, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]