With no explanation, label each line with "O", "organization-politicalparty", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
She
then
returned
to
politics
in
1998
,
running
for
the
leadership
of
the
Alberta
Liberals
after
the
resignation
of
Grant
Mitchell
.
She:O
then:O
returned:O
to:O
politics:O
in:O
1998:O
,:O
running:O
for:O
the:O
leadership:O
of:O
the:O
Alberta:organization-politicalparty
Liberals:organization-politicalparty
after:O
the:O
resignation:O
of:O
Grant:person-politician
Mitchell:person-politician
.:O