A tan dog walks down a stream between mounds of snow.
The dog is next to a boy.
A boy is not a dog; a mound of snow is not a boy.
exists e1 s1 s2 x1 x2 x3 x4.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & between(x2,x3) & of(x3,x4) & n_snow(x4) & n_mound(x3) & n_stream(x2) & n_dog(x1) & a_tan(s1) & Theme(s1,x1))
exists s1 x1 x2.(n_dog(x1) & to(s1,x2) & n_boy(x2) & Theme(s1,x1) & a_next(s1))