With no explanation, label each line with "O", "building-theater", "person-artist/author", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Rudolf
Nureyev
staged
the
piece
in
1964
for
the
Royal
Academy
of
Dancing
,
and
at
La
Scala
in
1970
.
Rudolf:person-artist/author
Nureyev:person-artist/author
staged:O
the:O
piece:O
in:O
1964:O
for:O
the:O
Royal:organization-education
Academy:organization-education
of:organization-education
Dancing:organization-education
,:O
and:O
at:O
La:building-theater
Scala:building-theater
in:O
1970:O
.:O