Question: who is the lead singer of lcd soundsystem
[{'answer': 'James Murphy', 'provenance': [{'wikipedia_id': '1507641', 'title': 'LCD Soundsystem', 'start_paragraph_id': 1, 'start_character': 93, 'end_paragraph_id': 1, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]