A child and a woman are in the snow sledding and playing.
A child and his mother playing in the snow.
WE DON'T KNOW THAT THE WOMAN IS HIS MOTHER.
exists p1 x1 x2 x3 x4 x5 x6 x7.(n_playing(x7) & n_sledding(x6) & subset_of(x7,x4) & subset_of(x6,x4) & of(x4,x5) & n_snow(x5) & in(x1,x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_child(x2))
exists s1 x1 x2 x3 x4.(n_snow(x4) & a_topic(s1) & subset_of(x2,s1) & in(x2,x4) & n_playing(x2) & of(x2,x3) & n_mother(x3) & of(x2,x1) & n_male(x1) & subset_of(x1,s1) & n_child(x1))