Question: who wrote the song superstar by the carpenters
[{'answer': 'Bonnie Bramlett', 'provenance': [{'wikipedia_id': '7660401', 'title': 'Superstar (Delaney and Bonnie song)', 'start_paragraph_id': 1, 'start_character': 38, 'end_paragraph_id': 1, 'end_character': 53, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Leon Russell', 'provenance': [{'wikipedia_id': '7660401', 'title': 'Superstar (Delaney and Bonnie song)', 'start_paragraph_id': 1, 'start_character': 58, 'end_paragraph_id': 1, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Delaney Bramlett', 'provenance': [{'wikipedia_id': '7660401', 'title': 'Superstar (Delaney and Bonnie song)', 'start_paragraph_id': 1, 'start_character': 111, 'end_paragraph_id': 1, 'end_character': 127, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7660401', 'title': 'Superstar (Delaney and Bonnie song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 276, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7149689074400940181}, 'section': 'Section::::Abstract.'}]}]