A safety worker is checking the railway.
The railway is damaged.
A safety worker checking the railway doesn't mean it is damaged.
exists e1 x1 x2 x3.(n_railway(x3) & Theme(e1,x3) & Actor(e1,x1) & v_check(e1) & n_worker(x1) & of(x1,x2) & n_safety(x2))
exists e1 x1.(n_railway(x1) & Theme(e1,x1) & v_damage(e1))