With no explanation, label each line with "location-GPE", "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Although
the
building
was
never
completed
,
it
``
is
regarded
as
one
of
the
best
examples
of
Egypt
ian
architecture
in
Nubia
.
''
Although:O
the:O
building:O
was:O
never:O
completed:O
,:O
it:O
``:O
is:O
regarded:O
as:O
one:O
of:O
the:O
best:O
examples:O
of:O
Egypt:location-GPE
ian:O
architecture:O
in:O
Nubia:location-other
.:O
'':O