The girl is on the treadmill.
The girl is sweating.
A girl on a treadmill is not necessarily sweating.
exists p1 x1 x2.(n_treadmill(x2) & n_girl(x1) & on(x1,x2))
exists e1 x1.(n_girl(x1) & Actor(e1,x1) & v_sweat(e1))