Question: who are the original members of the nitty gritty dirt band
[{'answer': 'Jeff Hanna', 'provenance': [{'wikipedia_id': '404924', 'title': 'Nitty Gritty Dirt Band', 'start_paragraph_id': 2, 'start_character': 60, 'end_paragraph_id': 2, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Jimmie Fadden', 'provenance': [{'wikipedia_id': '404924', 'title': 'Nitty Gritty Dirt Band', 'start_paragraph_id': 2, 'start_character': 83, 'end_paragraph_id': 2, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ralph Barr', 'provenance': [{'wikipedia_id': '404924', 'title': 'Nitty Gritty Dirt Band', 'start_paragraph_id': 6, 'start_character': 477, 'end_paragraph_id': 6, 'end_character': 487, 'bleu_score': 1.0, 'section': 'Section::::History.:1966–69.\n'}]}, {'answer': 'Les Thompson', 'provenance': [{'wikipedia_id': '404924', 'title': 'Nitty Gritty Dirt Band', 'start_paragraph_id': 6, 'start_character': 511, 'end_paragraph_id': 6, 'end_character': 523, 'bleu_score': 1.0, 'section': 'Section::::History.:1966–69.\n'}]}, {'answer': 'Bruce Kunkel', 'provenance': [{'wikipedia_id': '404924', 'title': 'Nitty Gritty Dirt Band', 'start_paragraph_id': 6, 'start_character': 141, 'end_paragraph_id': 6, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::History.:1966–69.\n'}]}, {'answer': 'Jackson Browne', 'provenance': [{'wikipedia_id': '404924', 'title': 'Nitty Gritty Dirt Band', 'start_paragraph_id': 6, 'start_character': 590, 'end_paragraph_id': 6, 'end_character': 604, 'bleu_score': 1.0, 'section': 'Section::::History.:1966–69.\n'}]}]