an on-going race is occurring.
The race ended.
The race is either occurring or has ended.
exists e1 s1 x1.(Actor(e1,x1) & v_occur(e1) & n_race(x1) & a_on-going(s1) & Theme(s1,x1))
exists e1 x1.(n_race(x1) & Actor(e1,x1) & v_end(e1))