Question: who sang i want to change the world
[{'answer': 'Alvin Lee', 'provenance': [{'wikipedia_id': '35553362', 'title': "I'd Love to Change the World", 'start_paragraph_id': 1, 'start_character': 100, 'end_paragraph_id': 1, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]