With no explanation, label each line with "location-GPE", "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
then
went
on
to
study
for
his
masters
and
doctorate
,
both
in
economics
,
at
the
prestigious
Delhi
School
of
Economics
University
of
Delhi
.
He:O
then:O
went:O
on:O
to:O
study:O
for:O
his:O
masters:O
and:O
doctorate:O
,:O
both:O
in:O
economics:O
,:O
at:O
the:O
prestigious:O
Delhi:organization-education
School:organization-education
of:organization-education
Economics:organization-education
University:organization-education
of:O
Delhi:location-GPE
.:O