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
guns
were
manned
by
troops
from
the
artillery
divisions
of
the
Navy
and
the
marines
,
none
of
whom
had
ever
fired
them
.
The:O
guns:O
were:O
manned:O
by:O
troops:O
from:O
the:O
artillery:O
divisions:O
of:O
the:O
Navy:O
and:O
the:O
marines:O
,:O
none:O
of:O
whom:O
had:O
ever:O
fired:O
them:O
.:O