With no explanation, label each line with "O", "person-artist/author", "person-director", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
2003
production
was
revived
by
Stefan
Sanchez
and
the
opera
was
conducted
by
Trisdee
na
Patalung
.
The:O
2003:O
production:O
was:O
revived:O
by:O
Stefan:person-artist/author
Sanchez:person-artist/author
and:O
the:O
opera:O
was:O
conducted:O
by:O
Trisdee:person-director
na:person-director
Patalung:person-director
.:O