Question: who sang lead vocals on best of my love
[{'answer': 'Don Henley', 'provenance': [{'wikipedia_id': '5177486', 'title': 'Best of My Love (Eagles song)', 'start_paragraph_id': 1, 'start_character': 39, 'end_paragraph_id': 1, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]