With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
With
the
signing
of
the
Paris
Peace
Accord
in
March
1973
,
the
Vietnam
War
finally
came
to
an
end
for
the
U.S
.
With:O
the:O
signing:O
of:O
the:O
Paris:location-GPE
Peace:O
Accord:O
in:O
March:O
1973:O
,:O
the:O
Vietnam:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
finally:O
came:O
to:O
an:O
end:O
for:O
the:O
U.S:location-GPE
.:O