Groups of men sit at banquet tables.
Groups of men are at a banquet.
Just because they are at the banquet, doesn't mean they are sitting at tables
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_table(x3) & of(x3,x4) & n_banquet(x4) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_man(x2) & n_group(x1))
exists p1 x1 x2.(exists x3.(at(x1,x3) & n_banquet(x3)) & of(x1,x2) & n_man(x2) & n_group(x1))