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 ":".
Cysteine
is
formed
from
cystathionine
via
the
cystathionine
gamma-lyase
enzyme
,
and
is
either
broken
down
by
cysteine
lyase
or
cystathionine
gamma-lyase
or
enters
the
cysteine
sulfinic
acid
pathway
where
it
is
oxidized
by
cysteine
dioxygenase
to
form
cysteine
sulfinic
acid
.
Cysteine:other-chemicalthing
is:O
formed:O
from:O
cystathionine:other-chemicalthing
via:O
the:O
cystathionine:other-biologything
gamma-lyase:other-biologything
enzyme:other-biologything
,:O
and:O
is:O
either:O
broken:O
down:O
by:O
cysteine:other-biologything
lyase:other-biologything
or:O
cystathionine:other-biologything
gamma-lyase:other-biologything
or:O
enters:O
the:O
cysteine:other-chemicalthing
sulfinic:other-chemicalthing
acid:other-chemicalthing
pathway:O
where:O
it:O
is:O
oxidized:O
by:O
cysteine:other-biologything
dioxygenase:other-biologything
to:O
form:O
cysteine:other-chemicalthing
sulfinic:other-chemicalthing
acid:other-chemicalthing
.:O