A group of young people walking with two talking on cellphones.
Two people are holding phones.
A group of young people may consist of two people.  People talking on cellphones must be holding phones.
exists e2 e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & on(e2,x5) & n_cellphone(x5) & Actor(e2,x4) & v_talk(e2) & with(e1,x4) & n_thing(x4) & card_eq_2(x4) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_people(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_phone(x2) & n_people(x1) & card_eq_2(x1))