With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Once
a
location
was
found
near
a
river
bank
at
Inba-Numa
in
Chiba
,
they
put
up
prefabricated
buildings
to
live
in
.
Once:O
a:O
location:O
was:O
found:O
near:O
a:O
river:O
bank:O
at:O
Inba-Numa:location-GPE
in:O
Chiba:location-GPE
,:O
they:O
put:O
up:O
prefabricated:O
buildings:O
to:O
live:O
in:O
.:O