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
Peninsular
Ranges
are
separated
from
the
Sierra
Madre
del
Sur
by
an
expanse
of
ocean
.
The:O
Peninsular:location-mountain
Ranges:location-mountain
are:O
separated:O
from:O
the:O
Sierra:location-mountain
Madre:location-mountain
del:location-mountain
Sur:location-mountain
by:O
an:O
expanse:O
of:O
ocean:O
.:O