With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
His
daring
escape
from
a
camp
at
Dehradun
in
1944
with
mountaineer
Heinrich
Harrer
is
documented
in
Megener
's
memoir
,
``
Prisoner
's
Bluff
''
.
His:O
daring:O
escape:O
from:O
a:O
camp:O
at:O
Dehradun:location-GPE
in:O
1944:O
with:O
mountaineer:O
Heinrich:person-other
Harrer:person-other
is:O
documented:O
in:O
Megener:location-GPE
's:O
memoir:O
,:O
``:O
Prisoner:O
's:O
Bluff:O
'':O
.:O