With no explanation, label each line with "O", "other-chemicalthing", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Sudan
1
is
a
compound
being
warned
of
for
health
hazards
by
the
EU
regulation
.
Sudan:other-chemicalthing
1:other-chemicalthing
is:O
a:O
compound:O
being:O
warned:O
of:O
for:O
health:O
hazards:O
by:O
the:O
EU:organization-government/governmentagency
regulation:O
.:O