With no explanation, label each line with "location-GPE", "O", "building-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
then
returned
to
Scotland
to
spend
over
40
years
as
a
successful
dentist
operating
from
14
Buckingham
Terrace
in
Glasgow
.
He:O
then:O
returned:O
to:O
Scotland:location-GPE
to:O
spend:O
over:O
40:O
years:O
as:O
a:O
successful:O
dentist:O
operating:O
from:O
14:building-other
Buckingham:building-other
Terrace:building-other
in:O
Glasgow:location-GPE
.:O