With no explanation, label each line with "location-GPE", "O", "location-road/railway/highway/transit", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
As
it
approached
Interstate
40
near
Bethany
the
National
Weather
Service
forecast
office
in
Norman
issued
a
tornado
emergency
citing
that
the
radar
was
detecting
a
potentially
large
and
violent
tornado
in
the
area
.
As:O
it:O
approached:O
Interstate:location-road/railway/highway/transit
40:location-road/railway/highway/transit
near:O
Bethany:location-other
the:location-other
National:location-other
Weather:location-other
Service:location-other
forecast:O
office:O
in:O
Norman:location-GPE
issued:O
a:O
tornado:O
emergency:O
citing:O
that:O
the:O
radar:O
was:O
detecting:O
a:O
potentially:O
large:O
and:O
violent:O
tornado:O
in:O
the:O
area:O
.:O