The boy in the black outfit is riding down the snowy hill on a red sled.
The boy is sleeping
A boy who is sleeping could not be riding down a hill.
exists e1 s1 s2 s3 s4 x1 x2 x3 x4.(n_hill(x3) & a_snowy(s2) & Theme(s2,x3) & n_outfit(x2) & a_black(s1) & Theme(s1,x2) & n_boy(x1) & on(e1,x4) & n_sled(x4) & a_red(s4) & Theme(s4,x4) & a_down(s3) & Manner(e1,s3) & Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & in(x1,x2))
exists e1 x1.(n_boy(x1) & Actor(e1,x1) & v_sleep(e1))