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 ":".
However
,
Najib
Razak
and
his
wife
refused
to
plead
guilty
.
However:O
,:O
Najib:O
Razak:O
and:O
his:O
wife:O
refused:O
to:O
plead:O
guilty:O
.:O