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 ":".
From
1
June
2012
,
Merseyside
Police
signed
a
four-year
deal
to
lease
the
helicopter
to
the
Norwegian
Police
Service
in
response
to
the
2011
terrorist
attacks
in
Norway
.
From:O
1:O
June:O
2012:O
,:O
Merseyside:organization-other
Police:organization-other
signed:O
a:O
four-year:O
deal:O
to:O
lease:O
the:O
helicopter:O
to:O
the:O
Norwegian:organization-other
Police:organization-other
Service:organization-other
in:O
response:O
to:O
the:O
2011:O
terrorist:O
attacks:O
in:O
Norway:location-GPE
.:O