A green motorcycle is being ridden on a wet racetrack.
Someone is riding a green motorcycle.
Green motorcycle is stated to be ridden
exists e1 s1 s2 x1 x2.(on(e1,x2) & n_racetrack(x2) & a_wet(s2) & Theme(s2,x2) & Theme(e1,x1) & v_ride(e1) & n_motorcycle(x1) & a_green(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & a_green(s1) & Theme(s1,x2) & n_person(x1))