A dog jumps and catches a toy.
A cat is playing with yarn.
A dog with a toy is not a cat with yarn
exists s1 x1 x2.(a_topic(s1) & all x3.(n_toy(x3) -> exists x4.(subset_of(x4,s1) & for(x4,x3) & n_catch(x4))) & subset_of(x1,s1) & n_jump(x1) & of(x1,x2) & n_dog(x2))
exists e1 x1 x2.(with(e1,x2) & n_yarn(x2) & Actor(e1,x1) & v_play(e1) & n_cat(x1))