With no explanation, label each line with "location-GPE", "O", "event-disaster", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
This
was
the
strongest
tornado
spawned
by
a
tropical
cyclone
since
Hurricane
Rita
spawned
an
F3
tornado
in
Clayton
,
Louisiana
,
on
September
24
,
2005
.
This:O
was:O
the:O
strongest:O
tornado:O
spawned:O
by:O
a:O
tropical:O
cyclone:O
since:O
Hurricane:event-disaster
Rita:event-disaster
spawned:O
an:O
F3:event-disaster
tornado:O
in:O
Clayton:location-GPE
,:O
Louisiana:location-GPE
,:O
on:O
September:O
24:O
,:O
2005:O
.:O