Question: who sang i celebrate my love for you
[{'answer': 'Peabo Bryson and Roberta Flack', 'provenance': [{'wikipedia_id': '12745205', 'title': 'Tonight, I Celebrate My Love', 'start_paragraph_id': 1, 'start_character': 121, 'end_paragraph_id': 1, 'end_character': 151, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]