Question: who topped the album charts in 2002 with imagine
[{'answer': 'Eva Cassidy', 'provenance': [{'wikipedia_id': '22846011', 'title': '2002 in British music charts', 'start_paragraph_id': 34, 'start_character': 616, 'end_paragraph_id': 34, 'end_character': 627, 'bleu_score': 1.0, 'section': 'Section::::Summary.:Charts.:August.\n'}]}]