With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
land
of
the
Regency
is
predominantly
hilly
,
especially
in
the
southern
area
of
the
Regency
.
The:O
land:O
of:O
the:O
Regency:location-mountain
is:O
predominantly:O
hilly:O
,:O
especially:O
in:O
the:O
southern:O
area:O
of:O
the:O
Regency:location-mountain
.:O