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
is
supposed
to
be
a
key
regulator
of
the
interactions
between
the
tumor
and
stroma
,
which
promotes
collective
cell
migration
in
breast
cancer
.
TGF-β:other-biologything
is:O
supposed:O
to:O
be:O
a:O
key:O
regulator:O
of:O
the:O
interactions:O
between:O
the:O
tumor:O
and:O
stroma:O
,:O
which:O
promotes:O
collective:O
cell:O
migration:O
in:O
breast:O
cancer:O
.:O