With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
It
remained
within
one
degree
of
celestial
north
for
nearly
200
years
afterwards
,
and
even
900
years
after
its
closest
approach
,
was
just
five
degrees
off
the
pole
.
It:O
remained:O
within:O
one:O
degree:O
of:O
celestial:O
north:O
for:O
nearly:O
200:O
years:O
afterwards:O
,:O
and:O
even:O
900:O
years:O
after:O
its:O
closest:O
approach:O
,:O
was:O
just:O
five:O
degrees:O
off:O
the:O
pole:O
.:O