With no explanation, label each line with "location-GPE", "O", "building-other", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
At
an
earlier
time
its
headquarters
were
on
the
property
of
Minneapolis-St
.
Paul
International
Airport
and
in
Fort
Snelling
,
an
unincorporated
area
in
Hennepin
County
.
At:O
an:O
earlier:O
time:O
its:O
headquarters:O
were:O
on:O
the:O
property:O
of:O
Minneapolis-St:location-GPE
.:O
Paul:building-airport
International:building-airport
Airport:building-airport
and:O
in:O
Fort:building-other
Snelling:building-other
,:O
an:O
unincorporated:O
area:O
in:O
Hennepin:location-GPE
County:O
.:O