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 ":".
Such
storms
are
a
natural
part
of
the
park
's
ecosystem
;
1960
's
Hurricane
Donna
left
nothing
in
the
mangroves
but
``
standing
dead
snags
''
several
miles
wide
,
but
30
years
later
the
area
had
completely
recovered
.
Such:O
storms:O
are:O
a:O
natural:O
part:O
of:O
the:O
park:O
's:O
ecosystem:O
;:O
1960:event-disaster
's:event-disaster
Hurricane:event-disaster
Donna:event-disaster
left:O
nothing:O
in:O
the:O
mangroves:O
but:O
``:O
standing:O
dead:O
snags:O
'':O
several:O
miles:O
wide:O
,:O
but:O
30:O
years:O
later:O
the:O
area:O
had:O
completely:O
recovered:O
.:O