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 ":".
The
refurbished
Gem
opened
in
1991
.
The:O
refurbished:O
Gem:building-theater
opened:O
in:O
1991:O
.:O