A motorcyclist in yellow and white rides his bike.
The driver is in a vehicle with two wheels.
Answer: Two wheels tell that the vehicle is a bike.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Time(x2,x4) & n_bike(x4) & n_his(x2) & of(x2,x3) & n_ride(x3) & a_white(s2) & Theme(s2,x2) & a_yellow(s1) & Theme(s1,x2) & n_motorcyclist(x1))
exists p1 x1.(n_driver(x1) & exists x2 x3.(in(x1,x2) & with(x2,x3) & n_wheel(x3) & card_eq_2(x3) & n_vehicle(x2)))