With no explanation, label each line with "O", "other-educationaldegree", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Over
the
next
few
years
he
took
courses
at
the
Columbia
University
School
of
International
and
Public
Affairs
and
at
the
University
of
Leeds
;
he
then
left
academia
without
finishing
a
graduate
degree
.
Over:O
the:O
next:O
few:O
years:O
he:O
took:O
courses:O
at:O
the:O
Columbia:organization-education
University:organization-education
School:organization-education
of:organization-education
International:organization-education
and:organization-education
Public:organization-education
Affairs:organization-education
and:O
at:O
the:O
University:organization-education
of:organization-education
Leeds:organization-education
;:O
he:O
then:O
left:O
academia:O
without:O
finishing:O
a:O
graduate:other-educationaldegree
degree:other-educationaldegree
.:O