With no explanation, label each line with "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Oval
Ballroom
is
an
example
of
Regency
architecture
.
The:O
Oval:building-other
Ballroom:building-other
is:O
an:O
example:O
of:O
Regency:O
architecture:O
.:O