With no explanation, label each line with "location-GPE", "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
only
other
rooftop
test
tracks
were
on
Fiat
's
Lingotto
plant
,
opened
in
1923
,
and
Palacio
Chrysler
in
Buenos
Aires
,
opened
in
1928
.
The:O
only:O
other:O
rooftop:O
test:O
tracks:O
were:O
on:O
Fiat:building-other
's:building-other
Lingotto:building-other
plant:building-other
,:O
opened:O
in:O
1923:O
,:O
and:O
Palacio:building-other
Chrysler:building-other
in:O
Buenos:location-GPE
Aires:location-GPE
,:O
opened:O
in:O
1928:O
.:O