With no explanation, label each line with "location-GPE", "person-soldier", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Three
months
later
,
on
March
31
,
1945
,
Campbell
participated
in
a
mission
of
the
332d
Fighter
Group
to
destroy
railroad
and
other
targets
in
the
area
surrounding
Munich
,
Germany
.
Three:O
months:O
later:O
,:O
on:O
March:O
31:O
,:O
1945:O
,:O
Campbell:person-soldier
participated:O
in:O
a:O
mission:O
of:O
the:O
332d:organization-other
Fighter:organization-other
Group:organization-other
to:O
destroy:O
railroad:O
and:O
other:O
targets:O
in:O
the:O
area:O
surrounding:O
Munich:location-GPE
,:O
Germany:location-GPE
.:O