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 ":".
After
World
War
II
,
the
ship
was
decommissioned
and
finally
scrapped
in
1961
.
After:O
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
II:event-attack/battle/war/militaryconflict
,:O
the:O
ship:O
was:O
decommissioned:O
and:O
finally:O
scrapped:O
in:O
1961:O
.:O