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 ":".
TGF-β
plays
a
crucial
role
in
the
regulation
of
the
cell
cycle
by
blocking
progress
through
G1
phase
.
TGF-β:other-biologything
plays:O
a:O
crucial:O
role:O
in:O
the:O
regulation:O
of:O
the:O
cell:O
cycle:O
by:O
blocking:O
progress:O
through:O
G1:other-biologything
phase:other-biologything
.:O