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 ":".
A
new
dam
was
built
here
soon
after
Hurricane
Bob
caused
severe
damage
to
the
older
structure
in
1985
.
A:O
new:O
dam:O
was:O
built:O
here:O
soon:O
after:O
Hurricane:event-disaster
Bob:event-disaster
caused:O
severe:O
damage:O
to:O
the:O
older:O
structure:O
in:O
1985:O
.:O