With no explanation, label each line with "O", "location-park", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Walt
Disney
World
began
operation
on
,
with
the
Magic
Kingdom
park
at
a
cost
of
$
400
million
.
Walt:location-park
Disney:location-park
World:location-park
began:O
operation:O
on:O
,:O
with:O
the:O
Magic:location-park
Kingdom:location-park
park:O
at:O
a:O
cost:O
of:O
$:O
400:O
million:O
.:O