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
Feyzin
disaster
was
the
worst
accident
which
had
occurred
in
petroleum
and
petrochemical
plants
in
Western
Europe
,
prior
to
the
Flixborough
disaster
in
1974
.
The:O
Feyzin:location-GPE
disaster:O
was:O
the:O
worst:O
accident:O
which:O
had:O
occurred:O
in:O
petroleum:O
and:O
petrochemical:O
plants:O
in:O
Western:location-GPE
Europe:location-GPE
,:O
prior:O
to:O
the:O
Flixborough:location-GPE
disaster:O
in:O
1974:O
.:O