Three children in football uniforms of two different teams are playing football on a football field , while another player and an adult stand in the background .
It is certain that three children in football uniforms of two different teams play football on a football field .
It is certain that three children in football uniforms of two different teams play football on a football field .
It is impossible that three children in football uniforms of two different teams play football on a football field .
three children in football uniforms of two different teams play football on a football field .