With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
For
multi-level
homes
,
it
is
recommended
to
have
a
minimum
of
one
carbon
monoxide
detector
per
floor
.
For:O
multi-level:O
homes:O
,:O
it:O
is:O
recommended:O
to:O
have:O
a:O
minimum:O
of:O
one:O
carbon:other-chemicalthing
monoxide:other-chemicalthing
detector:O
per:O
floor:O
.:O