With no explanation, label each line with "O", "location-road/railway/highway/transit", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
When
his
captors
are
distracted
Travis
escapes
and
is
soon
picked
up
by
an
Oklahoma
Highway
Patrol
trooper
,
who
is
later
shot
in
the
head
by
Cohen
while
he
's
driving
.
When:O
his:O
captors:O
are:O
distracted:O
Travis:person-other
escapes:O
and:O
is:O
soon:O
picked:O
up:O
by:O
an:O
Oklahoma:location-road/railway/highway/transit
Highway:location-road/railway/highway/transit
Patrol:O
trooper:O
,:O
who:O
is:O
later:O
shot:O
in:O
the:O
head:O
by:O
Cohen:person-other
while:O
he:O
's:O
driving:O
.:O