A silhouetted person is bowling.
The person is a bowler.
A silhouetted person actively bowling must be a real person bowling.
exists e1 s1 x1.(Actor(e1,x1) & v_bowl(e1) & n_person(x1) & a_silhouetted(s1) & Theme(s1,x1))
exists p1 x1.(n_person(x1) & exists x2.((x1 = x2) & n_bowler(x2)))