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 ":".
Non-
Smad
signaling
proteins
can
initiate
parallel
signaling
that
eventually
cooperate
with
the
Smads
or
crosstalk
with
other
major
signaling
pathways
.
Non-:O
Smad:other-biologything
signaling:O
proteins:O
can:O
initiate:O
parallel:O
signaling:O
that:O
eventually:O
cooperate:O
with:O
the:O
Smads:other-biologything
or:O
crosstalk:O
with:O
other:O
major:O
signaling:O
pathways:O
.:O