With no explanation, label each line with "location-GPE", "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
On
February
7
,
significant
damage
occurred
at
the
spillway
of
Oroville
Dam
in
Butte
County
.
On:O
February:O
7:O
,:O
significant:O
damage:O
occurred:O
at:O
the:O
spillway:O
of:O
Oroville:building-other
Dam:building-other
in:O
Butte:location-GPE
County:O
.:O