A man is fixing his bike.
Man watches someone fixing his car
A bike is a different form of transportation than a car.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fix(e1) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_watch(e2) & Theme(e1,x4) & Actor(e1,x3) & v_fix(e1) & n_car(x4) & of(x4,x1) & n_male(x1) & (x2 = x3) & n_person(x2) & n_man(x1))