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 ":".
Carcinoembryonic
antigen
(
CEA
)
describes
a
set
of
highly
related
glycoproteins
involved
in
cell
adhesion
.
Carcinoembryonic:other-biologything
antigen:other-biologything
(:O
CEA:other-biologything
):O
describes:O
a:O
set:O
of:O
highly:O
related:O
glycoproteins:O
involved:O
in:O
cell:O
adhesion:O
.:O