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 ":".
Aluminium
oxide
(
alumina
)
is
amphoteric
:
it
dissolves
in
both
bases
and
acids
.
Aluminium:other-chemicalthing
oxide:other-chemicalthing
(:O
alumina:other-chemicalthing
):O
is:O
amphoteric:O
::O
it:O
dissolves:O
in:O
both:O
bases:O
and:O
acids:O
.:O