With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
On
Guam
most
of
the
Japanese
defenders
retreated
to
the
cliffs
at
the
northern
end
of
the
island
where
thousands
committed
suicide
by
jumping
to
their
deaths
.
On:O
Guam:location-GPE
most:O
of:O
the:O
Japanese:location-GPE
defenders:O
retreated:O
to:O
the:O
cliffs:O
at:O
the:O
northern:O
end:O
of:O
the:O
island:O
where:O
thousands:O
committed:O
suicide:O
by:O
jumping:O
to:O
their:O
deaths:O
.:O