A man walking a gray poodle is walking past a billboard with a cow on it.
A man and his dog sitting on the couch.
Sentence one seems to describe a man walking his dog outside in a city. Sentence two makes it seem the man and dog are inside sitting on the couch.
exists e2 e1 s1 x1 x2 x3 x4 x5.(with(e2,x5) & on(x5,x1) & n_thing(x1) & n_cow(x5) & past(e2,x4) & n_billboard(x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_poodle(x3) & a_gray(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3 x4.(n_couch(x4) & a_topic(s1) & subset_of(x2,s1) & on(e1,x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_dog(x2) & of(x2,x1) & n_male(x1) & subset_of(x1,s1) & n_man(x1))