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
was
professor
emeritus
of
international
law
at
Washington
University
in
St.
Louis
,
and
had
been
the
Charles
Nagel
Professor
of
Jurisprudence
in
International
Law
.
He:O
was:O
professor:O
emeritus:O
of:O
international:O
law:O
at:O
Washington:organization-education
University:organization-education
in:O
St.:location-GPE
Louis:location-GPE
,:O
and:O
had:O
been:O
the:O
Charles:O
Nagel:O
Professor:O
of:O
Jurisprudence:O
in:O
International:O
Law:O
.:O