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 ":".
One
of
the
main
applications
of
oxalic
acid
is
rust-removal
,
which
arises
because
oxalate
forms
water-soluble
derivatives
with
the
ferric
ion
.
One:O
of:O
the:O
main:O
applications:O
of:O
oxalic:other-chemicalthing
acid:other-chemicalthing
is:O
rust-removal:O
,:O
which:O
arises:O
because:O
oxalate:O
forms:O
water-soluble:O
derivatives:O
with:O
the:O
ferric:O
ion:O
.:O