Question: who sang it's a mad world original
[{'answer': 'British band Tears for Fears', 'provenance': [{'wikipedia_id': '1621949', 'title': 'Mad World', 'start_paragraph_id': 1, 'start_character': 34, 'end_paragraph_id': 1, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1621949', 'title': 'Mad World', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 346, 'bleu_score': 0.9699161750394991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4566269642948700258}, 'section': 'Section::::Abstract.'}]}]