Three males are sitting on a sofa with beers on a table in front of them.
Three men sit on the sofa while drinking beers
Drinking beers specifies what they were doing with the beers in front of them.
exists e1 x1 x2 x3 x4 x5.(in(e1,x5) & of(x5,x1) & n_thing(x1) & n_front(x5) & on(e1,x4) & n_table(x4) & with(e1,x3) & n_beer(x3) & on(e1,x2) & n_sofa(x2) & Actor(e1,x1) & v_sit(e1) & n_male(x1) & card_eq_3(x1))
exists e1 x1 x2 x3 x4.(n_sofa(x2) & while(e1,x3) & n_beer(x3) & of(x3,x4) & n_drinking(x4) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_3(x1))