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
ferrocyanide
is
used
to
achieve
a
blue
color
on
cast
bronze
sculptures
during
the
final
finishing
stage
of
the
sculpture
.
Potassium:other-chemicalthing
ferrocyanide:other-chemicalthing
is:O
used:O
to:O
achieve:O
a:O
blue:O
color:O
on:O
cast:O
bronze:O
sculptures:O
during:O
the:O
final:O
finishing:O
stage:O
of:O
the:O
sculpture:O
.:O