Question: who is the lead singer of looking glass
[{'answer': 'Elliot Lurie', 'provenance': [{'wikipedia_id': '1425331', 'title': 'Looking Glass (band)', 'start_paragraph_id': 3, 'start_character': 161, 'end_paragraph_id': 3, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Career.\n'}]}]