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
library
is
open
to
the
public
.
The:O
library:O
is:O
open:O
to:O
the:O
public:O
.:O