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 ":".
A
2001
Russian
study
showed
that
naloxone
,
a
drug
used
to
reverse
the
intoxicating
effects
of
opioid
drugs
,
can
successfully
treat
depersonalization
disorder
.
A:O
2001:O
Russian:location-GPE
study:O
showed:O
that:O
naloxone:O
,:O
a:O
drug:O
used:O
to:O
reverse:O
the:O
intoxicating:O
effects:O
of:O
opioid:O
drugs:O
,:O
can:O
successfully:O
treat:O
depersonalization:O
disorder:O
.:O