A girl treks through the snow with her backpack on.
A girl is running to the beach.
The girl cannot trek through the snow at the same time as she is running to the beach.
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.(n_beach(x2) & to(e1,x2) & Actor(e1,x1) & v_run(e1) & n_girl(x1))