With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Moving
westward
across
the
Atlantic
Ocean
,
it
continued
to
slowly
strengthen
,
reaching
hurricane
status
early
on
August
23
.
Moving:O
westward:O
across:O
the:O
Atlantic:location-bodiesofwater
Ocean:location-bodiesofwater
,:O
it:O
continued:O
to:O
slowly:O
strengthen:O
,:O
reaching:O
hurricane:O
status:O
early:O
on:O
August:O
23:O
.:O