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 ":".
He
served
his
midshipman
duty
on
the
cruisers
and
,
and
as
a
sub-lieutenant
on
the
battleship
,
cruiser
,
battlecruiser
and
destroyer
.
He:O
served:O
his:O
midshipman:O
duty:O
on:O
the:O
cruisers:O
and:O
,:O
and:O
as:O
a:O
sub-lieutenant:O
on:O
the:O
battleship:O
,:O
cruiser:O
,:O
battlecruiser:O
and:O
destroyer:O
.:O