With no explanation, label each line with "O", "location-park", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
After
his
death
,
the
estate
was
sold
off
in
parcels
for
development
by
Audubon
's
widow
,
which
is
when
it
became
known
as
``
Audubon
Park
``
.
After:O
his:O
death:O
,:O
the:O
estate:O
was:O
sold:O
off:O
in:O
parcels:O
for:O
development:O
by:O
Audubon:person-other
's:O
widow:O
,:O
which:O
is:O
when:O
it:O
became:O
known:O
as:O
``:O
Audubon:location-park
Park:location-park
``:O
.:O