A gray dog runs in a backyard terrace.
A gray dog sleeps in the sun.
A dog or any creature for that matter cannot run and sleeps [sic] at the same time.
exists e1 s1 x1 x2 x3.(in(e1,x2) & n_terrace(x2) & of(x2,x3) & n_backyard(x3) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_gray(s1) & Theme(s1,x1))
exists s1 x1 x2 x3.(n_sun(x3) & a_topic(x1) & in(x1,x3) & n_sleep(x1) & of(x1,x2) & n_dog(x2) & a_gray(s1) & Theme(s1,x1))