With no explanation, label each line with "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Lectures
were
held
by
instructors
such
as
Theodor
W.
Adorno
,
René
Leibowitz
,
Heinz-Klaus
Metzger
,
and
later
Carl
Dahlhaus
and
Rudolf
Stephan
,
offering
critical
reflection
of
advanced
composition
.
Lectures:O
were:O
held:O
by:O
instructors:O
such:O
as:O
Theodor:person-scholar
W.:person-scholar
Adorno:person-scholar
,:O
René:person-scholar
Leibowitz:person-scholar
,:O
Heinz-Klaus:person-scholar
Metzger:person-scholar
,:O
and:O
later:O
Carl:person-scholar
Dahlhaus:person-scholar
and:O
Rudolf:person-scholar
Stephan:person-scholar
,:O
offering:O
critical:O
reflection:O
of:O
advanced:O
composition:O
.:O