With no explanation, label each line with "product-food", "O", "building-restaurant", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Schlotzsky
's
is
a
privately
held
franchise
chain
of
restaurants
,
specializing
in
sandwiches
.
Schlotzsky:building-restaurant
's:O
is:O
a:O
privately:O
held:O
franchise:O
chain:O
of:O
restaurants:O
,:O
specializing:O
in:O
sandwiches:product-food
.:O