With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Near
Clearwater
,
waves
reached
in
height
,
marked
by
a
period
of
13
seconds
on
August
31
.
Near:O
Clearwater:location-bodiesofwater
,:O
waves:O
reached:O
in:O
height:O
,:O
marked:O
by:O
a:O
period:O
of:O
13:O
seconds:O
on:O
August:O
31:O
.:O