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 ":".
Protease
inhibitory
activity
in
blood
plasma
was
first
reported
in
the
late
1800s
,
but
it
was
not
until
the
1950s
that
the
serpins
antithrombin
and
alpha
1-antitrypsin
were
isolated
.
Protease:other-biologything
inhibitory:other-biologything
activity:O
in:O
blood:other-biologything
plasma:other-biologything
was:O
first:O
reported:O
in:O
the:O
late:O
1800s:O
,:O
but:O
it:O
was:O
not:O
until:O
the:O
1950s:O
that:O
the:O
serpins:other-biologything
antithrombin:other-biologything
and:O
alpha:other-biologything
1-antitrypsin:other-biologything
were:O
isolated:O
.:O