A girl treks through the snow with her backpack on.
A girl walks home from school in the snow.
Just because a girl has a backpack on it doesn't mean she went to 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 x1 x2 x3 x4.(n_snow(x4) & in(e1,x4) & from(e1,x3) & n_school(x3) & Time(e1,x2) & n_home(x2) & Actor(e1,x1) & v_walk(e1) & n_girl(x1))