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 ":".
In
fact
,
dozens
of
latices
of
different
plant
families
are
known
to
contain
cysteine
proteases
.
In:O
fact:O
,:O
dozens:O
of:O
latices:O
of:O
different:O
plant:O
families:O
are:O
known:O
to:O
contain:O
cysteine:other-biologything
proteases:other-biologything
.:O