With no explanation, label each line with "person-politician", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
system
was
created
by
the
Dallas
Federation
of
Women
's
Clubs
with
efforts
spearheaded
by
then
president
May
Dickson
Exall
.
The:O
system:O
was:O
created:O
by:O
the:O
Dallas:organization-other
Federation:organization-other
of:organization-other
Women:organization-other
's:organization-other
Clubs:organization-other
with:O
efforts:O
spearheaded:O
by:O
then:O
president:O
May:person-politician
Dickson:person-politician
Exall:person-politician
.:O