With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
CT
scan
abnormalities
showed
dilatation
of
the
ventricular
system
.
The:O
CT:O
scan:O
abnormalities:O
showed:O
dilatation:O
of:O
the:O
ventricular:O
system:O
.:O