With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
At
the
time
of
the
accident
,
Lauda
Air
operated
three
weekly
flights
between
Bangkok
and
Vienna
.
At:O
the:O
time:O
of:O
the:O
accident:O
,:O
Lauda:organization-company
Air:organization-company
operated:O
three:O
weekly:O
flights:O
between:O
Bangkok:location-GPE
and:O
Vienna:location-GPE
.:O