A girl drinking a pop.
The girl is having a drink.
Drinking a pop is having a drink.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_drink(e1) & n_pop(x3) & (x1 = x2) & n_girl(x1))
exists e1 x1 x2.(n_girl(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_drink(x2))