With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
power
station
was
commissioned
in
2002
and
cost
$
1.5
billion
to
build
.
The:O
power:O
station:O
was:O
commissioned:O
in:O
2002:O
and:O
cost:O
$:O
1.5:O
billion:O
to:O
build:O
.:O