A girl treks through the snow with her backpack on.
A girl wearing a coat is walking home from school
Not all children are wearing a coat because there is now and just because a girl has a backpack on it doesn't mean she is walking home from school.
exists e1 s1 x1 x2 x3.(n_snow(x2) & n_backpack(x3) & of(x3,x2) & n_female(x2) & a_on(s1) & Manner(e1,s1) & through(e1,x2) & with(e1,x3) & Actor(e1,x1) & v_trek(e1) & n_girl(x1))
exists e1 e2 x1 x2 x3 x4 x5.(from(e2,x5) & n_school(x5) & Time(e2,x4) & n_home(x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_coat(x3) & (x1 = x2) & n_girl(x1))