With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Members
of
the
SoCal
Grotto
volunteer
on
conservation
projects
each
year
.
Members:O
of:O
the:O
SoCal:location-other
Grotto:location-other
volunteer:O
on:O
conservation:O
projects:O
each:O
year:O
.:O