Men in military uniform get a ride on the back of a tractor.
Women are riding on motorcycles.
Women and men are different genders.  Motorcycles are a different vehicle than a tractor.
exists e1 s1 x1 x2 x3 x4 x5.(n_back(x4) & Theme(e1,x3) & Actor(e1,x1) & v_get(e1) & on(x3,x4) & of(x4,x5) & n_tractor(x5) & n_ride(x3) & in(x1,x2) & n_uniform(x2) & a_military(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(on(e1,x2) & n_motorcycle(x2) & Actor(e1,x1) & v_ride(e1) & n_woman(x1))