Five children walk on a sandy beach.
A gang of pickpockets look for unwary tourists.
You can not infer it is a gang.
exists e1 s1 x1 x2.(on(e1,x2) & n_beach(x2) & a_sandy(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_child(x1) & card_eq_5(x1))
exists e1 s1 x1 x2 x3.(for(e1,x3) & n_tourist(x3) & a_unwary(s1) & Theme(s1,x3) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_pickpocket(x2) & n_gang(x1))