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 ":".
It
involves
two
steps
,
namely
the
titration
of
the
analyte
with
potassium
permanganate
solution
and
then
the
standardization
of
potassium
permanganate
solution
with
standard
sodium
oxalate
solution
.
It:O
involves:O
two:O
steps:O
,:O
namely:O
the:O
titration:O
of:O
the:O
analyte:O
with:O
potassium:other-chemicalthing
permanganate:other-chemicalthing
solution:O
and:O
then:O
the:O
standardization:O
of:O
potassium:other-chemicalthing
permanganate:other-chemicalthing
solution:O
with:O
standard:O
sodium:other-chemicalthing
oxalate:other-chemicalthing
solution:O
.:O