With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
On
28
May
Company
A
,
1/77th
,
encountered
a
PAVN
squad
and
in
45
minutes
had
killed
five
PAVN
.
On:O
28:O
May:O
Company:O
A:O
,:O
1/77th:O
,:O
encountered:O
a:O
PAVN:organization-other
squad:O
and:O
in:O
45:O
minutes:O
had:O
killed:O
five:O
PAVN:organization-other
.:O