A guy walking his four dogs.
This guy is a professional dog walker.
Not all dog walker is a professional dog walker.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_dog(x3) & card_eq_4(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_guy(x1))
exists p1 x1.(n_guy(x1) & exists s1 x2 x3.((x1 = x2) & n_walker(x2) & of(x2,x3) & n_dog(x3) & a_professional(s1) & Theme(s1,x2)))