With no explanation, label each line with "O", "building-theater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
premiered
at
the
Sydney
Opera
House
in
2002
.
It:O
premiered:O
at:O
the:O
Sydney:building-theater
Opera:building-theater
House:building-theater
in:O
2002:O
.:O