With no explanation, label each line with "product-car", "O", "location-road/railway/highway/transit", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
During
the
1990s
an
ad
for
Samara
was
prominently
displayed
for
several
years
at
Stockholm
Central
Station
.
During:O
the:O
1990s:O
an:O
ad:O
for:O
Samara:product-car
was:O
prominently:O
displayed:O
for:O
several:O
years:O
at:O
Stockholm:location-road/railway/highway/transit
Central:location-road/railway/highway/transit
Station:location-road/railway/highway/transit
.:O