With no explanation, label each line with "organization-sportsteam", "organization-sportsleague", "event-sportsevent", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Southend
United
were
one
of
24
teams
that
co-founded
The
Football
League
's
new
Third
Division
in
1920
for
the
upcoming
1920–21
season
.
Southend:organization-sportsteam
United:organization-sportsteam
were:O
one:O
of:O
24:O
teams:O
that:O
co-founded:O
The:organization-sportsleague
Football:organization-sportsleague
League:organization-sportsleague
's:O
new:O
Third:event-sportsevent
Division:event-sportsevent
in:O
1920:O
for:O
the:O
upcoming:O
1920–21:O
season:O
.:O