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
August
23
,
1945
,
he
signed
the
terms
to
surrender
his
troops
to
the
invading
Soviet
Union
.
On:O
August:O
23:O
,:O
1945:O
,:O
he:O
signed:O
the:O
terms:O
to:O
surrender:O
his:O
troops:O
to:O
the:O
invading:O
Soviet:location-GPE
Union:location-GPE
.:O