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 ":".
Cholesterol
has
256
stereoisomers
that
arise
from
its
8
stereocenters
,
although
only
two
of
the
stereoisomers
are
of
biochemical
significance
(
``
nat
''
-cholesterol
and
``
ent
''
-cholesterol
,
for
``
natural
''
and
``
enantiomer
''
,
respectively
)
,
and
only
one
occurs
naturally
(
``
nat
''
-cholesterol
)
.
Cholesterol:other-biologything
has:O
256:O
stereoisomers:O
that:O
arise:O
from:O
its:O
8:O
stereocenters:O
,:O
although:O
only:O
two:O
of:O
the:O
stereoisomers:O
are:O
of:O
biochemical:O
significance:O
(:O
``:other-biologything
nat:other-biologything
'':other-biologything
-cholesterol:other-biologything
and:O
``:other-biologything
ent:other-biologything
'':other-biologything
-cholesterol:other-biologything
,:O
for:O
``:O
natural:O
'':O
and:O
``:O
enantiomer:O
'':O
,:O
respectively:O
):O
,:O
and:O
only:O
one:O
occurs:O
naturally:O
(:O
``:other-biologything
nat:other-biologything
'':other-biologything
-cholesterol:other-biologything
):O
.:O