With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Although
this
treatment
significantly
decreases
the
serum
levels
of
homocysteine
,
this
treatment
is
not
thought
to
improve
health
outcomes
.
Although:O
this:O
treatment:O
significantly:O
decreases:O
the:O
serum:O
levels:O
of:O
homocysteine:other-biologything
,:O
this:O
treatment:O
is:O
not:O
thought:O
to:O
improve:O
health:O
outcomes:O
.:O