A motorcyclist in yellow.
A motorcyclist is wearing yellow.
Answer: In and wearing means the same.
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_yellow(x2) & n_motorcyclist(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_yellow(x2) & n_motorcyclist(x1))