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 ":".
Sodium
bicarbonate
is
an
amphoteric
compound
.
Sodium:other-chemicalthing
bicarbonate:other-chemicalthing
is:O
an:O
amphoteric:O
compound:O
.:O