With no explanation, label each line with "O", "other-chemicalthing", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Again
,
the
cysteine
is
used
for
breaking
up
the
disulfide
bonds
in
the
hair
's
keratin
.
Again:O
,:O
the:O
cysteine:other-biologything
is:O
used:O
for:O
breaking:O
up:O
the:O
disulfide:other-chemicalthing
bonds:other-chemicalthing
in:O
the:O
hair:other-biologything
's:other-biologything
keratin:other-biologything
.:O