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 ":".
Although
virtually
ignored
,
it
is
said
to
be
one
of
the
greatest
waterfalls
in
the
state
.
Although:O
virtually:O
ignored:O
,:O
it:O
is:O
said:O
to:O
be:O
one:O
of:O
the:O
greatest:O
waterfalls:O
in:O
the:O
state:O
.:O