With no explanation, label each line with "O", "event-election", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
She
has
been
involved
in
presidential
campaigns
beginning
with
Walter
Mondale
in
1984
,
Michael
Dukakis
in
1988
,
and
Bill
Clinton
in
1992
.
She:O
has:O
been:O
involved:O
in:O
presidential:event-election
campaigns:event-election
beginning:O
with:O
Walter:person-other
Mondale:person-other
in:O
1984:O
,:O
Michael:person-other
Dukakis:person-other
in:O
1988:O
,:O
and:O
Bill:person-other
Clinton:person-other
in:O
1992:O
.:O