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
repair
work
on
the
nave
roof
was
sub-standard
,
and
only
fifty
years
after
the
rebuilding
was
in
a
dangerous
condition
.
The:O
repair:O
work:O
on:O
the:O
nave:O
roof:O
was:O
sub-standard:O
,:O
and:O
only:O
fifty:O
years:O
after:O
the:O
rebuilding:O
was:O
in:O
a:O
dangerous:O
condition:O
.:O