With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Oxidative
cleavage
,
for
instance
cleavage
of
1,2-dihydroxybenzene
to
the
monomethylester
of
2,4
hexadienedioic
acid
with
oxygen
,
copper
chloride
in
pyridine
Oxidative
de-aromatization
to
quinones
also
known
as
the
Teuber
reaction
.
Oxidative:other-chemicalthing
cleavage:other-chemicalthing
,:O
for:O
instance:O
cleavage:other-chemicalthing
of:other-chemicalthing
1,2-dihydroxybenzene:other-chemicalthing
to:O
the:O
monomethylester:other-chemicalthing
of:other-chemicalthing
2,4:other-chemicalthing
hexadienedioic:other-chemicalthing
acid:other-chemicalthing
with:O
oxygen:other-chemicalthing
,:O
copper:other-chemicalthing
chloride:other-chemicalthing
in:O
pyridine:other-chemicalthing
Oxidative:other-chemicalthing
de-aromatization:other-chemicalthing
to:O
quinones:O
also:O
known:O
as:O
the:O
Teuber:other-chemicalthing
reaction:O
.:O