Question: who sings on ghost town by kanye west
[{'answer': 'PartyNextDoor', 'provenance': [{'wikipedia_id': '57695553', 'title': 'Ghost Town (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 133, 'end_paragraph_id': 1, 'end_character': 146, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Kid Cudi', 'provenance': [{'wikipedia_id': '57695553', 'title': 'Ghost Town (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 148, 'end_paragraph_id': 1, 'end_character': 156, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '070 Shake', 'provenance': [{'wikipedia_id': '57695553', 'title': 'Ghost Town (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 161, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '57695553', 'title': 'Ghost Town (Kanye West song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16827127268810829078}, 'section': 'Section::::Abstract.'}]}]