Person on a red, white, and black racing motorcycle.
A person is on a motorcycle.
A person is on a motorcycle is another way of saying a person on a motorcycle.
exists s1 s2 s3 s4 s5 s6 x1 x2.(ne_nam_person(s1) & a_topic(s1) & on(s1,x1) & n_motorcycle(x1) & of(x1,x2) & n_racing(x2) & a_black(s6) & Theme(s6,x1) & a_,(s5) & Theme(s5,x1) & a_white(s4) & Theme(s4,x1) & a_,(s3) & Theme(s3,x1) & a_red(s2) & Theme(s2,x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_motorcycle(x2)) & n_person(x1))