A man is wake while being pulled by a boat.
A girl pulls her brother in a wagon.
Cannot be a man and a girl at the same time, and cannot wake-board and pull a wagon at the same time
exists e1 p1 x1 x2.(while(p1,e1) & Actor(e1,x2) & n_boat(x2) & Theme(e1,x1) & v_pull(e1) & exists x3.((x1 = x3) & n_wake(x3)) & n_man(x1))
exists e1 x1 x2 x3.(in(e1,x3) & n_wagon(x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_brother(x2) & of(x2,x1) & n_female(x1) & n_girl(x1))