A dog performs acrobatic stunts on a platform.
A dog is on the couch.
A dog cannot perform a stunt on a platform if it is on the couch.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_platform(x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_stunt(x2) & a_acrobatic(s1) & Theme(s1,x2) & n_dog(x1))
exists p1 x1 x2.(n_couch(x2) & on(x1,x2) & n_dog(x1))