A woman is riding a horse along the shore.
The woman is a professional cowgirl.
not all woman are a cowgirl.
exists e1 x1 x2 x3.(n_shore(x3) & along(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_woman(x1))
exists p1 x1.(n_woman(x1) & exists s1 x2.((x1 = x2) & n_cowgirl(x2) & a_professional(s1) & Theme(s1,x2)))