Ringling abounds with spirited, spooky discoveries Generations of Ringling School of Art and Design students claim to have seen a ghostly figure in Keating Center, and now they're taking the eerie story national ROBERTA C. NELSON Herald Staff Writer SARASOTA - When Christina Siciliano was a student at Ringling School of Art and Design nine years ago, she turned off the lights in her dorm room every night and said, "Good night, Mary." Siciliano didn't have a roommate. She lived alone in Room 12 in Keating Center. Mary was the ghost students have talked about for years, and many believe...