Question: who sang the theme song for the beverly hillbillies
[{'answer': 'Jerry Scoggins', 'provenance': [{'wikipedia_id': '2535443', 'title': 'The Ballad of Jed Clampett', 'start_paragraph_id': 2, 'start_character': 21, 'end_paragraph_id': 2, 'end_character': 35, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Lester Flatt', 'provenance': [{'wikipedia_id': '2535443', 'title': 'The Ballad of Jed Clampett', 'start_paragraph_id': 1, 'start_character': 264, 'end_paragraph_id': 1, 'end_character': 276, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]