A dog trying to catch a tennis ball.
The dog is a beagle.
Not all dogs are a beagle.
exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_try(e1) & exists e2 x3 x4.(Theme(e2,x3) & Actor(e2,x2) & v_catch(e2) & n_ball(x3) & of(x3,x4) & n_tennis(x4)) & (x1 = x2) & n_dog(x1))
exists p1 x1.(n_dog(x1) & exists x2.((x1 = x2) & n_beagle(x2)))