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 ":".
The
aircraft
was
a
Lockheed
L-749A
Constellation
,
a
low-wing
monoplane
airliner
with
four
Wright
R-3350
Duplex-Cyclone
radial
engines
.
The:O
aircraft:O
was:O
a:O
Lockheed:product-airplane
L-749A:product-airplane
Constellation:product-airplane
,:O
a:O
low-wing:O
monoplane:O
airliner:O
with:O
four:O
Wright:product-other
R-3350:product-other
Duplex-Cyclone:product-other
radial:O
engines:O
.:O