There are two guys sitting around a table, both with beers in their hands.
A father and son are drinking beer together.
Just because two guys are sitting around a table doesn't imply a father and son.
exists p1 x1 e1 x2 x3 x4 x5 x6.((x1 = x2) & r_both(e1) & with(e1,x5) & in(x5,x6) & n_hand(x6) & of(x6,x2) & n_thing(x2) & n_beer(x5) & around(e1,x4) & n_table(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_guy(x2) & card_eq_2(x2))
exists e1 s1 x1 x2 x3 x4.(a_together(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_drink(e1) & n_beer(x4) & n_son(x3) & n_father(x2) & subset_of(x3,x1) & subset_of(x2,x1))