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
completion
date
was
set
for
2012
,
but
the
reactor
suffered
delays
and
cost
overruns
.
The:O
completion:O
date:O
was:O
set:O
for:O
2012:O
,:O
but:O
the:O
reactor:O
suffered:O
delays:O
and:O
cost:O
overruns:O
.:O