A man is fixing his bike.
Man fixing the chains of his bike
The man could be fixing any part of his bike - it does not have to be the chains.
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 x1 x2 x3 x4.(n_bike(x4) & of(x4,x3) & n_male(x3) & n_chain(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_fix(e1) & of(x3,x4) & (x1 = x2) & n_man(x1))