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 ":".
Over
188,000
people
in
the
Feather
River
valley
were
evacuated
as
officials
feared
the
collapse
of
the
emergency
spillway
,
which
could
have
sent
a
30-foot
(
9
m
)
wall
of
water
into
the
Feather
River
below
and
flooded
communities
downstream
.
Over:O
188,000:O
people:O
in:O
the:O
Feather:location-bodiesofwater
River:location-bodiesofwater
valley:O
were:O
evacuated:O
as:O
officials:O
feared:O
the:O
collapse:O
of:O
the:O
emergency:O
spillway:O
,:O
which:O
could:O
have:O
sent:O
a:O
30-foot:O
(:O
9:O
m:O
):O
wall:O
of:O
water:O
into:O
the:O
Feather:location-bodiesofwater
River:location-bodiesofwater
below:O
and:O
flooded:O
communities:O
downstream:O
.:O