An African American man in a brown shirt is singing on a stage.
A gospel singer practicing for a show.
An African American man singing on stage does not mean he is a gospel singer practicing for a show
exists e1 s1 s2 s3 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Actor(e1,x1) & v_sing(e1) & in(x1,x2) & n_shirt(x2) & a_brown(s3) & Theme(s3,x2) & n_man(x1) & a_american(s2) & Theme(s2,x1) & a_african(s1) & Theme(s1,x1))
exists x1 x2 x3 x4.(a_topic(x1) & for(x1,x4) & n_show(x4) & n_practicing(x1) & of(x1,x3) & n_singer(x3) & of(x1,x2) & n_gospel(x2))