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 ":".
Starch
production
is
an
isolation
of
starch
from
plant
sources
.
Starch:other-chemicalthing
production:O
is:O
an:O
isolation:O
of:O
starch:other-chemicalthing
from:O
plant:O
sources:O
.:O