With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
1999
,
the
line
's
corridor
from
Idanha
to
the
Cascade
summit
was
designated
as
a
historic
district
and
listed
on
the
National
Register
of
Historic
Places
.
In:O
1999:O
,:O
the:O
line:O
's:O
corridor:O
from:O
Idanha:location-GPE
to:O
the:O
Cascade:O
summit:O
was:O
designated:O
as:O
a:O
historic:O
district:O
and:O
listed:O
on:O
the:O
National:O
Register:O
of:O
Historic:O
Places:O
.:O