A child in a red coat preparing a large snowball.
a child is making a snowball
Preparing a snowball implies making a snowball.
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_prepare(e1) & n_snowball(x4) & a_large(s2) & Theme(s2,x4) & (x2 = x3) & n_coat(x2) & a_red(s1) & Theme(s1,x2) & n_child(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_snowball(x2) & n_child(x1))