A brown and black dog walks along a rocky beach.
A dog is lying down in the sand at the beach.
Either the beach is rocky or sandy, but not both.
exists e1 s1 s2 s3 x1 x2.(along(e1,x2) & n_beach(x2) & a_rocky(s3) & Theme(s3,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1) & a_black(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_beach(x3) & n_sand(x2) & at(e1,x3) & in(e1,x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lie(e1) & n_dog(x1))