With no explanation, label each line with "other-disease", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Brain
ischemia
is
insufficient
blood
flow
to
the
brain
,
and
can
be
acute
or
chronic
.
Brain:other-disease
ischemia:other-disease
is:O
insufficient:O
blood:O
flow:O
to:O
the:O
brain:O
,:O
and:O
can:O
be:O
acute:O
or:O
chronic:O
.:O