In a survey of 250 professional athletes, it was found that 123 of them owned a convertible, 86 of them owned a giant screen TV, and 117 owned a sporting goods store. 25 owned a convertible and a store, 36 owned a TV and a store, and 53 owned a covertible and a TV. 15 owned all three items. How many athletes owned exactly one type of item in the survey