A ballerina dressed in yellow is dancing, on a stage.
There is a person dancing.
A ballerina is a person.
exists e1 e2 x1 x2 x3 x4.(on(e2,x4) & n_stage(x4) & Actor(e2,x1) & v_dance(e2) & in(e1,x3) & n_yellow(x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_ballerina(x1))
exists p1 x1 x2 x3.((x1 = x2) & Time(x2,x3) & n_dancing(x3) & n_person(x2))