With no explanation, label each line with "O", "event-disaster", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
was
damaged
in
Hurricane
Katrina
.
It:O
was:O
damaged:O
in:O
Hurricane:event-disaster
Katrina:event-disaster
.:O