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 ":".
This
library
houses
an
auditorium
for
public
events
.
This:O
library:O
houses:O
an:O
auditorium:O
for:O
public:O
events:O
.:O