A man swinging at a tennis ball with a green sign that read findersport.
the man has a tennis racket
A sign does not have to be a tennis racket. It could be some other kind of sign object, like an actual sign, like the kind you get off the side of the road or from the front of a store or something.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & at(e1,x3) & with(x3,x5) & Theme(e2,x7) & Actor(e2,x6) & v_read(e2) & n_findersport(x7) & (x5 = x6) & n_sign(x5) & a_green(s1) & Theme(s1,x5) & n_ball(x3) & of(x3,x4) & n_tennis(x4) & Actor(e1,x2) & v_swing(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_racket(x2) & of(x2,x3) & n_tennis(x3))