Four school children walk to school wearing warm apparel.
Four friend walking to school in the winter.
You can not infer it is winter.
exists e1 e2 s1 s2 x1 x2 x3.(to(e1,x3) & n_apparel(x3) & a_warm(s2) & Theme(s2,x3) & Actor(e2,x3) & v_wear(e2) & a_school(s1) & Theme(s1,x3) & Actor(e1,x1) & v_walk(e1) & n_child(x1) & of(x1,x2) & n_school(x2) & card_eq_4(x1))
exists x1 x2 x3 x4.(n_winter(x4) & a_topic(x1) & to(x1,x3) & in(x3,x4) & n_school(x3) & n_walking(x1) & of(x1,x2) & n_friend(x2) & card_eq_4(x1))