Question: who sings just what i needed by the cars
[{'answer': 'Ric Ocasek', 'provenance': [{'wikipedia_id': '3102086', 'title': 'Just What I Needed', 'start_paragraph_id': 4, 'start_character': 262, 'end_paragraph_id': 4, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}]