With no explanation, label each line with "O", "person-scholar", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Brock
conducted
postdoctoral
studies
(
2003-2004
)
at
the
Friedrich
Alexander
University
of
Erlangen–Nuremberg
under
Hans
G.
Ulrich
.
Brock:person-scholar
conducted:O
postdoctoral:O
studies:O
(:O
2003-2004:O
):O
at:O
the:O
Friedrich:organization-education
Alexander:organization-education
University:organization-education
of:organization-education
Erlangen–Nuremberg:organization-education
under:O
Hans:person-scholar
G.:person-scholar
Ulrich:person-scholar
.:O