Question: who sings the 4 song on sesame street
[{'answer': 'Feist', 'provenance': [{'wikipedia_id': '1539839', 'title': 'Feist (singer)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1539839', 'title': 'Feist (singer)', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 200, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17271915029590085753}, 'section': 'Section::::Music career.:"The Reminder" (2006–2007).\n'}]}]