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 ":".
Based
on
this
new
information
,
the
Copenhagen
police
force
reopened
the
case
.
Based:O
on:O
this:O
new:O
information:O
,:O
the:O
Copenhagen:location-GPE
police:O
force:O
reopened:O
the:O
case:O
.:O