sentences:  In 1976, he won a Grammy Award for a recording of "Porgy and Bess"; he performed the role of "Sportin' Life" over 100 times.For 25 years, Clemmons performed the role of Officer Clemmons, a friendly neighborhood policeman, in the "Neighborhood of Make-Believe" on the children's television show "Mister Rogers' Neighborhood".In the neighborhood itself, Clemmons ran a singing and dance studio located in the building diagonally across the street from Mister Rogers' house.