With no explanation, label each line with "O", "other-language", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
After
some
controversy
and
a
public
discussion
in
2008
,
``
the
proposal
was
not
accepted
''
,
although
it
had
been
already
used
in
several
places
–
the
``
Bulgarian
Phonetic
''
layout
in
MS
Windows
Vista
is
based
on
it
.
After:O
some:O
controversy:O
and:O
a:O
public:O
discussion:O
in:O
2008:O
,:O
``:O
the:O
proposal:O
was:O
not:O
accepted:O
'':O
,:O
although:O
it:O
had:O
been:O
already:O
used:O
in:O
several:O
places:O
–:O
the:O
``:O
Bulgarian:other-language
Phonetic:O
'':O
layout:O
in:O
MS:product-software
Windows:product-software
Vista:O
is:O
based:O
on:O
it:O
.:O