A runner is about to run underneath this bridge in the fall.
A runner wearing gym shorts is running.
Not all runners wear gym shorts or shorts in general. Also just because someone is about to run somewhere does not imply they are currently running.
exists p1 s1 x1 x3 x4.(n_fall(x4) & n_bridge(x3) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 x2.(in(e1,x4) & Time(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_underneath(x2)) & n_runner(x1))
exists e2 e1 x1 x2 x3 x4.(Actor(e2,x1) & v_run(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shorts(x3) & of(x3,x4) & n_gym(x4) & (x1 = x2) & n_runner(x1))