With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
They
then
drove
to
the
Red
Lodge
Mountain
golf
course
and
searched
for
balls
the
same
color
as
their
flag
.
They:O
then:O
drove:O
to:O
the:O
Red:location-mountain
Lodge:location-mountain
Mountain:location-mountain
golf:O
course:O
and:O
searched:O
for:O
balls:O
the:O
same:O
color:O
as:O
their:O
flag:O
.:O