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 ":".
The
headquarters
was
in
Genoa
while
production
continued
in
Turin
.
The:O
headquarters:O
was:O
in:O
Genoa:location-GPE
while:O
production:O
continued:O
in:O
Turin:location-GPE
.:O