With no explanation, label each line with "O", "event-other", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
By
mid-October
,
1,574
airmen
from
Myrtle
Beach
had
arrived
as
part
of
``
Constant
Guard
IV
``
.
By:O
mid-October:O
,:O
1,574:O
airmen:O
from:O
Myrtle:location-other
Beach:location-other
had:O
arrived:O
as:O
part:O
of:O
``:O
Constant:event-other
Guard:event-other
IV:event-other
``:O
.:O