With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Since
the
1988
presidential
election
Democrats
have
had
success
in
capturing
Iowa
's
electoral
votes
.
Since:O
the:O
1988:O
presidential:O
election:O
Democrats:organization-politicalparty
have:O
had:O
success:O
in:O
capturing:O
Iowa:location-GPE
's:O
electoral:O
votes:O
.:O