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 ":".
It
was
not
until
2007
that
the
victims
'
relatives
were
awarded
compensation
.
It:O
was:O
not:O
until:O
2007:O
that:O
the:O
victims:O
':O
relatives:O
were:O
awarded:O
compensation:O
.:O