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 ":".
If
the
sulfur
in
cysteine
attacked
cyanogen
bromide
,
the
bromide
ion
would
deprotonate
the
cyanide
adduct
,
leaving
the
sulfur
uncharged
and
the
beta
carbon
of
the
cysteine
not
electrophilic
.
If:O
the:O
sulfur:O
in:O
cysteine:O
attacked:O
cyanogen:other-chemicalthing
bromide:other-chemicalthing
,:O
the:O
bromide:other-chemicalthing
ion:other-chemicalthing
would:O
deprotonate:O
the:O
cyanide:O
adduct:O
,:O
leaving:O
the:O
sulfur:O
uncharged:O
and:O
the:O
beta:O
carbon:O
of:O
the:O
cysteine:O
not:O
electrophilic:O
.:O