Question: who was the voice of hr puff n stuff
[{'answer': 'Lennie Weinrib', 'provenance': [{'wikipedia_id': '192202', 'title': 'H.R. Pufnstuf', 'start_paragraph_id': 9, 'start_character': 159, 'end_paragraph_id': 9, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}]