The tennis player in the red shirt is trying to hit the ball.
The shirt is red
' red shirt  ' is a rephrasing  of ' the shirt is red .'.
exists e1 p1 s1 x1 x2 x3 x4.(n_ball(x4) & n_shirt(x3) & a_red(s1) & Theme(s1,x3) & n_player(x1) & of(x1,x2) & n_tennis(x2) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Theme(e2,x4) & Actor(e2,x1) & v_hit(e2)) & in(x1,x3))
exists s1 x1.(n_shirt(x1) & Theme(s1,x1) & a_red(s1))