The skateboarder in the white t-shirt is riding on a wooden ramp.
A person is skateboarding on a ramp.
The skateboarder riding on a wooden ramp is same as person is skateboarding on a ramp
exists e1 s1 s2 x1 x2 x3.(n_t-shirt(x2) & a_white(s1) & Theme(s1,x2) & n_skateboarder(x1) & on(e1,x3) & n_ramp(x3) & a_wooden(s2) & Theme(s2,x3) & Actor(e1,x1) & v_ride(e1) & in(x1,x2))
exists e1 x1 x2.(on(e1,x2) & n_ramp(x2) & Actor(e1,x1) & v_skateboard(e1) & n_person(x1))