With no explanation, label each line with "location-GPE", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Kryssing
of
the
Danish
army
shortly
after
the
invasion
of
the
USSR
had
begun
.
Kryssing:O
of:O
the:O
Danish:location-GPE
army:O
shortly:O
after:O
the:O
invasion:O
of:O
the:O
USSR:organization-other
had:O
begun:O
.:O