A dog performs acrobatic stunts on a platform.
the dog is an alsatian
the dog performing acrobatic stunts need not be an Alsatian.
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.(n_dog(x1) & exists x2.((x1 = x2) & n_alsatian(x2)))