A motorcyclist takes a corner.
A woman is riding a motorcycle.
Not every motorcyclist is a woman.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_corner(x2) & n_motorcyclist(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_woman(x1))