A child with a sled plays in the snow at dusk.
A child is pulling the tree through the snow.
Child cannot be pulling a tree and sled at same time.
exists e1 x1 x2 x3 x4.(n_snow(x3) & a_topic(x1) & with(x1,x2) & in(x2,x3) & at(x3,x4) & n_dusk(x4) & n_play(x2) & Theme(e1,x2) & v_sled(e1) & n_child(x1))
exists e1 x1 x2 x3.(n_snow(x3) & n_tree(x2) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_child(x1))