With no explanation, label each line with "product-airplane", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Strategic
Air
Command
began
deploying
Boeing
B-52
Stratofortress
bombers
and
aerial
refueling
aircraft
to
the
newly
completed
airfield
facilities
in
1987
.
The:O
Strategic:organization-other
Air:organization-other
Command:organization-other
began:O
deploying:O
Boeing:product-airplane
B-52:product-airplane
Stratofortress:product-airplane
bombers:O
and:O
aerial:O
refueling:O
aircraft:O
to:O
the:O
newly:O
completed:O
airfield:O
facilities:O
in:O
1987:O
.:O