A motorcyclist dressed in red.
There is a motorcyclist
The person who is dressed in red is a motorcyclist.
exists e1 x1 x2.(in(e1,x2) & n_red(x2) & Theme(e1,x1) & v_dress(e1) & n_motorcyclist(x1))
exists p1 x1 x2.((x1 = x2) & n_motorcyclist(x2))