With no explanation, label each line with "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
ninth
ship
of
the
class
,
the
vessel
served
mostly
during
the
Cold
War
from
being
launched
in
1974
.
The:O
ninth:O
ship:O
of:O
the:O
class:O
,:O
the:O
vessel:O
served:O
mostly:O
during:O
the:O
Cold:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
from:O
being:O
launched:O
in:O
1974:O
.:O