With no explanation, label each line with "O", "location-GPE", "person-artist/author", "building-theater", "art-other", "art-broadcastprogram", "art-film", "art-music", "art-painting" or "art-writtenart" preceded by ":".
His
opera
,
Celestial
Mechanics
,
premiered
in
Berlin
in
August
2013
,
produced
by
Deutsche
Oper
Berlin
and
phase7
with
Libretto
by
Christiane
Neudecker
and
the
artistic
direction
of
Sven
Sören
Beyer
His:O
opera:O
,:O
Celestial:art-other
Mechanics:art-other
,:O
premiered:O
in:O
Berlin:location-GPE
in:O
August:O
2013:O
,:O
produced:O
by:O
Deutsche:building-theater
Oper:building-theater
Berlin:building-theater
and:O
phase7:O
with:O
Libretto:O
by:O
Christiane:person-artist/author
Neudecker:person-artist/author
and:O
the:O
artistic:O
direction:O
of:O
Sven:O
Sören:O
Beyer:O