A man does yard work.
The man is drinking a beer on his lawn.
The man cannot be doing yard work and drinking a beer simultaneously.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_work(x2) & of(x2,x3) & n_yard(x3) & n_man(x1))
exists e1 x1 x2 x3.(n_lawn(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_drink(e1) & n_beer(x2))