With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Today
its
speakers
tend
to
be
elderly
and
concentrated
in
Central
and
Gulf
provinces
.
Today:O
its:O
speakers:O
tend:O
to:O
be:O
elderly:O
and:O
concentrated:O
in:O
Central:O
and:O
Gulf:O
provinces:O
.:O