Old man is fixing overturned bike.
An old man is riding a bike.
If a man is fixing a bike while it is overturned, he will be unable to ride the bike during that activity.
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fix(e1) & n_bike(x2) & a_overturned(s2) & Theme(s2,x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))