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 ":".
Although
this
is
partly
offset
by
fall
cooling
in
East
Antarctica
,
this
effect
was
restricted
to
the
1980s
and
1990s
.
Although:O
this:O
is:O
partly:O
offset:O
by:O
fall:O
cooling:O
in:O
East:location-GPE
Antarctica:location-GPE
,:O
this:O
effect:O
was:O
restricted:O
to:O
the:O
1980s:O
and:O
1990s:O
.:O