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 ":".
On
23
April
2015
,
a
seminar
was
held
in
Westminster
on
the
new
legislation
.
On:O
23:O
April:O
2015:O
,:O
a:O
seminar:O
was:O
held:O
in:O
Westminster:location-GPE
on:O
the:O
new:O
legislation:O
.:O