With no explanation, label each line with "product-other", "product-airplane", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Currently
the
world
's
largest
helicopter
,
the
Mil
Mi-26
,
uses
a
Bambi
bucket
.
Currently:O
the:O
world:O
's:O
largest:O
helicopter:O
,:O
the:O
Mil:product-airplane
Mi-26:product-airplane
,:O
uses:O
a:O
Bambi:product-other
bucket:product-other
.:O