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 ":".
Potassium
perchlorate
is
the
inorganic
salt
with
the
chemical
formula
KClO4
.
Potassium:other-chemicalthing
perchlorate:other-chemicalthing
is:O
the:O
inorganic:O
salt:O
with:O
the:O
chemical:O
formula:O
KClO4:other-chemicalthing
.:O