Someone riding sideways on a motorcycle.
A man rides a motorcycle sideways on the countryside
riding doesn't always mean countryside
exists e1 x1 x2.(on(e1,x2) & n_motorcycle(x2) & Actor(e1,x1) & v_sideway(e1) & n_riding(x1))
exists e2 e1 x1 x2 x3 x4.(n_countryside(x4) & on(e2,x4) & Actor(e2,x1) & v_sideway(e2) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_motorcycle(x3) & (x1 = x2) & n_man(x1))