With no explanation, label each line with "O", "product-food", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
old-fashioned
doughnut
is
a
type
of
cake
doughnut
,
and
has
been
described
as
a
``
subset
''
of
the
cake
doughnut
.
The:O
old-fashioned:O
doughnut:product-food
is:O
a:O
type:O
of:O
cake:O
doughnut:product-food
,:O
and:O
has:O
been:O
described:O
as:O
a:O
``:O
subset:O
'':O
of:O
the:O
cake:O
doughnut:product-food
.:O