Question: who was the center square on hollywood squares in the 70s
[{'answer': 'Paul Lynde', 'provenance': [{'wikipedia_id': '56989', 'title': 'Hollywood Squares', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::1966–81.:Cast of stars.\n'}]}, {'provenance': [{'wikipedia_id': '56989', 'title': 'Hollywood Squares', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 419, 'bleu_score': 0.8916150504276841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9738213424350177215}, 'section': 'Section::::1966–81.:Cast of stars.\n'}]}]