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 ":".
Zirconium
metal
is
much
more
expensive
than
zircon
because
the
reduction
processes
are
costly
.
Zirconium:other-chemicalthing
metal:other-chemicalthing
is:O
much:O
more:O
expensive:O
than:O
zircon:other-chemicalthing
because:O
the:O
reduction:O
processes:O
are:O
costly:O
.:O