A child on a red disc sled slides down a small snow-covered hill.
A child is sledding.
a red disc is used to go sledding
exists e1 s1 s2 s3 x1 x2 x3 x4.(down(e1,x4) & n_hill(x4) & a_snow-covered(s3) & Theme(s3,x4) & a_small(s2) & Theme(s2,x4) & Theme(e1,x3) & Actor(e1,x1) & v_sled(e1) & n_slide(x3) & on(x1,x2) & n_disc(x2) & a_red(s1) & Theme(s1,x2) & n_child(x1))
exists e1 x1.(Actor(e1,x1) & v_sled(e1) & n_child(x1))