With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Its
numbers
are
declining
and
it
is
listed
by
the
IUCN
as
``
endangered
''
.
Its:O
numbers:O
are:O
declining:O
and:O
it:O
is:O
listed:O
by:O
the:O
IUCN:organization-other
as:O
``:O
endangered:O
'':O
.:O