The gray and white dog is walking on gravel.
they hated each other
Dog is singular and they is plural.
exists e1 s1 s2 x1 x2.(n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_gray(s1) & Theme(s1,x1) & on(e1,x2) & n_gravel(x2) & Actor(e1,x1) & v_walk(e1))
exists x1.(n_thing(x1) & all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_hate(e1))))