A competitor does a pole vault.
An athlete competes in the pole vaulting event.
Athlete is a type of competitor, and does a pole vault implies competes.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_vault(x2) & of(x2,x3) & n_pole(x3) & n_competitor(x1))
exists e1 s1 x1 x2 x3 x4.(n_pole(x2) & a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_vault(e1) & n_event(x4) & (x2 = x3) & n_compete(x1) & a_athlete(s1) & Theme(s1,x1))