Question: who sings the song where have all the flowers gone
[{'answer': 'Pete Seeger', 'provenance': [{'wikipedia_id': '8443279', 'title': 'Where Have All the Flowers Gone?', 'start_paragraph_id': 1, 'start_character': 118, 'end_paragraph_id': 1, 'end_character': 129, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]