With no explanation, label each line with "product-other", "product-car", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
(
)
or
rail
zeppelin
was
an
experimental
railcar
which
resembled
a
Zeppelin
airship
in
appearance
.
The:O
(:O
):O
or:O
rail:product-car
zeppelin:product-car
was:O
an:O
experimental:O
railcar:O
which:O
resembled:O
a:O
Zeppelin:product-other
airship:product-other
in:O
appearance:O
.:O