A man in a red and black suit is riding on a white motorcycle.
A man is riding a motorcycle down the street.
A man is riding a motorcycle is the same as a man is riding on a motorcycle.
exists e1 s1 s2 s3 x1 x2 x3.(on(e1,x3) & n_motorcycle(x3) & a_white(s3) & Theme(s3,x3) & Actor(e1,x1) & v_ride(e1) & in(x1,x2) & n_suit(x2) & a_black(s2) & Theme(s2,x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(n_street(x3) & down(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & n_man(x1))