With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
helped
to
lay
the
groundwork
for
Poland
's
successful
eastern
policy
after
the
fall
of
communism
.
This:O
helped:O
to:O
lay:O
the:O
groundwork:O
for:O
Poland:location-GPE
's:O
successful:O
eastern:O
policy:O
after:O
the:O
fall:O
of:O
communism:O
.:O