CONCACAF Women's Olympic Qualifying Tournament
Women's football tournaments in Olympics have been held since 1996 , but the qualifying tournaments by continental confederations ( including CONCACAF ) are to be held since 2004 tournament . 
<triplet> 1996 <subj> 1996 <obj> point in time <triplet> 2004 tournament <subj> 2004 <obj> point in time