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 ":".
The
setting
was
later
changed
to
an
unnamed
US
city
.
The:O
setting:O
was:O
later:O
changed:O
to:O
an:O
unnamed:O
US:location-GPE
city:O
.:O