With no explanation, label each line with "product-airplane", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
On
October
23
,
1999
,
Harrison
Ford
was
involved
in
the
crash
of
a
Bell
206L4
LongRanger
helicopter
(
N36R
)
.
On:O
October:O
23:O
,:O
1999:O
,:O
Harrison:person-other
Ford:person-other
was:O
involved:O
in:O
the:O
crash:O
of:O
a:O
Bell:product-airplane
206L4:product-airplane
LongRanger:product-airplane
helicopter:product-airplane
(:O
N36R:O
):O
.:O