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 ":".
As
the
Battalion
1
firefighters
examined
the
supposed
gas
leak
,
American
Airlines
Flight
11
flew
overhead
.
As:O
the:O
Battalion:organization-other
1:organization-other
firefighters:organization-other
examined:O
the:O
supposed:O
gas:O
leak:O
,:O
American:product-airplane
Airlines:product-airplane
Flight:product-airplane
11:O
flew:O
overhead:O
.:O