A boy is pulling a little boy in a red sled through the snow.
Two boys are in the snow.
if a boy is pulling another boy through the snow, it is evident both boys are playing outside during the winter.
exists e1 s1 s2 x1 x2 x3 x4.(n_snow(x4) & through(e1,x4) & in(e1,x3) & n_sled(x3) & a_red(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_boy(x2) & a_little(s1) & Theme(s1,x2) & n_boy(x1))
exists p1 x1 x2.(n_snow(x2) & in(x1,x2) & n_boy(x1) & card_eq_2(x1))