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 ":".
On
its
own
,
it
will
produce
a
very
dark
shade
of
blue
and
is
often
mixed
with
other
chemicals
to
achieve
the
desired
tint
and
hue
.
On:O
its:O
own:O
,:O
it:O
will:O
produce:O
a:O
very:O
dark:O
shade:O
of:O
blue:O
and:O
is:O
often:O
mixed:O
with:O
other:O
chemicals:O
to:O
achieve:O
the:O
desired:O
tint:O
and:O
hue:O
.:O