With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
defences
of
Reserve
Infantry
Regiment
110
had
been
destroyed
and
dugout
entrances
had
only
been
kept
open
by
constant
digging
.
The:O
defences:O
of:O
Reserve:organization-other
Infantry:organization-other
Regiment:organization-other
110:organization-other
had:O
been:O
destroyed:O
and:O
dugout:O
entrances:O
had:O
only:O
been:O
kept:O
open:O
by:O
constant:O
digging:O
.:O