A gentleman is checking a bike wheel while some women watch.
Someone is fixing a chain.
A gentleman checking a bike wheel is not fixing it.
exists e1 e2 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x1) & v_watch(e2) & n_thing(x6) & while(e1,x5) & n_woman(x5) & Theme(e1,x3) & Actor(e1,x2) & v_check(e1) & n_wheel(x3) & of(x3,x4) & n_bike(x4) & (x1 = x2) & n_gentleman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fix(e1) & n_chain(x2) & n_person(x1))