Two people sitting on a tree stump next to a stream.
Two people are drinking beer on a tree stump.
You can not infer there is beer.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(e1,x3) & to(x5,x6) & n_stream(x6) & next(x3,x5) & n_thing(x5) & n_stump(x3) & of(x3,x4) & n_tree(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_stump(x3) & of(x3,x4) & n_tree(x4) & Theme(e1,x2) & Actor(e1,x1) & v_drink(e1) & n_beer(x2) & n_people(x1) & card_eq_2(x1))