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
cardiac
muscle
development
,
beta-catenin
performs
a
biphasic
role
.
In:O
cardiac:O
muscle:O
development:O
,:O
beta-catenin:other-biologything
performs:O
a:O
biphasic:O
role:O
.:O