A man is standing in front of a bar.
man wants a beer
do not know if he wants a beer.
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_bar(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_want(e1) & n_beer(x2) & n_man(x1))