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
airships
were
given
names
in
addition
to
their
production
numbers
.
The:O
airships:O
were:O
given:O
names:O
in:O
addition:O
to:O
their:O
production:O
numbers:O
.:O