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
final
flight
to
use
it
was
Flight
774
from
London
to
Philadelphia
.
The:O
final:O
flight:O
to:O
use:O
it:O
was:O
Flight:O
774:O
from:O
London:O
to:O
Philadelphia:O
.:O