With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Aurora
Glacier
is
a
long
glacier
in
the
U.S.
state
of
Alaska
.
Aurora:person-other
Glacier:person-other
is:O
a:O
long:O
glacier:O
in:O
the:O
U.S.:location-GPE
state:location-GPE
of:location-GPE
Alaska:location-GPE
.:O