Two children are making something out of snow.
Two children playing with snow.
Sentence 2 is a rephrasing of sentence one, with both of them being concerned about snow.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & of(x3,x4) & n_snow(x4) & out(x2,x3) & n_thing(x3) & n_thing(x2) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_snow(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1) & card_eq_2(x1))