pigeons attack a blond boy.
pigeons attack a blond person.
pigeons attack a blond person refers to a blond boy
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_attack(e1) & n_boy(x2) & a_blond(s1) & Theme(s1,x2) & n_pigeon(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_attack(e1) & n_person(x2) & a_blond(s1) & Theme(s1,x2) & n_pigeon(x1))