The School's Football Balloon

The School's Football Balloon is a large structure in the form of a semi-spheric rubber balloon behind an elementary school. Inside it is a football court. It has a glass spinnig door as entrance and exit and audience seats on the sides. It is used in gym class and for football matches. It appears in "The Man in a Raincoat visits The School's Football Balloon " 1, 2 and 3.