With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Almost
40
%
of
the
park
's
area
(
79,579
acres/322
km2
)
has
been
designated
as
wilderness
under
the
National
Wilderness
Preservation
System
.
Almost:O
40:O
%:O
of:O
the:O
park:O
's:O
area:O
(:O
79,579:O
acres/322:O
km2:O
):O
has:O
been:O
designated:O
as:O
wilderness:O
under:O
the:O
National:O
Wilderness:O
Preservation:O
System:O
.:O