With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Valdez
Glacier
is
in
the
same
area
,
and
though
it
does
not
calve
,
has
also
retreated
significantly
.
The:O
Valdez:location-other
Glacier:location-other
is:O
in:O
the:O
same:O
area:O
,:O
and:O
though:O
it:O
does:O
not:O
calve:O
,:O
has:O
also:O
retreated:O
significantly:O
.:O