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
was
a
wooden
single-storey
building
measuring
50
to
60
feet
long
,
with
an
outpatient
department
,
male
and
female
wards
.
It:O
was:O
a:O
wooden:O
single-storey:O
building:O
measuring:O
50:O
to:O
60:O
feet:O
long:O
,:O
with:O
an:O
outpatient:O
department:O
,:O
male:O
and:O
female:O
wards:O
.:O