With no explanation, label each line with "O", "organization-sportsteam", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Challenge
Sports
Rotterdam
changed
its
name
to
Forward
Lease
Rotterdam
,
after
they
got
a
new
main
sponsor
.
Challenge:O
Sports:O
Rotterdam:O
changed:O
its:O
name:O
to:O
Forward:organization-sportsteam
Lease:organization-sportsteam
Rotterdam:organization-sportsteam
,:O
after:O
they:O
got:O
a:O
new:O
main:O
sponsor:O
.:O