A man in a red apron wearing a baseball cap is sitting on a step.
The man in the cap is standing on the roof.
One cannot be wearing and standing simultaneously.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(on(e2,x6) & n_step(x6) & Actor(e2,x1) & v_sit(e2) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_cap(x4) & of(x4,x5) & n_baseball(x5) & (x2 = x3) & n_apron(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(n_roof(x3) & n_cap(x2) & n_man(x1) & on(e1,x3) & Actor(e1,x1) & v_stand(e1) & in(x1,x2))