With no explanation, label each line with "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Historians
have
argued
that
the
two
parties
operated
parallel
paths
,
something
that
contributed
to
the
1968
split
between
KKE
and
KKE
Esoterikou
.
Historians:O
have:O
argued:O
that:O
the:O
two:O
parties:O
operated:O
parallel:O
paths:O
,:O
something:O
that:O
contributed:O
to:O
the:O
1968:O
split:O
between:O
KKE:organization-politicalparty
and:O
KKE:organization-politicalparty
Esoterikou:organization-politicalparty
.:O