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 ":".
Density
``
ρ
''
of
brine
at
various
concentrations
and
temperatures
from
200
°F
to
575
°F
can
be
approximated
with
a
linear
equation
:
Density:O
``:O
ρ:O
'':O
of:O
brine:O
at:O
various:O
concentrations:O
and:O
temperatures:O
from:O
200:O
°F:O
to:O
575:O
°F:O
can:O
be:O
approximated:O
with:O
a:O
linear:O
equation:O
::O