A group of people are enjoying a birthday celebration, with two cakes.
It is someone's birthday party.
Birthday party implies birthday celebration.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x1) & v_enjoy(e1) & with(x3,x5) & n_cake(x5) & card_eq_2(x5) & n_celebration(x3) & of(x3,x4) & n_birthday(x4) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1.(n_thing(x1) & exists x2 x3 x4.((x1 = x3) & n_party(x3) & of(x3,x4) & n_birthday(x4) & of(x3,x2) & n_person(x2)))