With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Prior
to
this
,
KPIX
had
been
CBS
'
longest-tenured
affiliate
(
a
distinction
that
now
belongs
to
Washington
,
D.C
.
's
WUSA
)
.
Prior:O
to:O
this:O
,:O
KPIX:organization-company
had:O
been:O
CBS:organization-company
':O
longest-tenured:O
affiliate:O
(:O
a:O
distinction:O
that:O
now:O
belongs:O
to:O
Washington:location-GPE
,:location-GPE
D.C:location-GPE
.:location-GPE
's:O
WUSA:organization-company
):O
.:O