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 ":".
He
is
the
only
ethics
committee
chair
ever
to
have
referred
the
heads
of
both
legislative
chambers
to
a
prosecutor
.
He:O
is:O
the:O
only:O
ethics:O
committee:O
chair:O
ever:O
to:O
have:O
referred:O
the:O
heads:O
of:O
both:O
legislative:O
chambers:O
to:O
a:O
prosecutor:O
.:O