With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Also
,
since
the
same
age
of
six
Popović
had
been
studying
piano
in
a
music
school
,
her
piano
teacher
reportedly
being
``
Macedonia
’
s
most
famous
piano
professor
''
.
Also:O
,:O
since:O
the:O
same:O
age:O
of:O
six:O
Popović:person-other
had:O
been:O
studying:O
piano:O
in:O
a:O
music:O
school:O
,:O
her:O
piano:O
teacher:O
reportedly:O
being:O
``:O
Macedonia:location-GPE
’:location-GPE
s:location-GPE
most:O
famous:O
piano:O
professor:O
'':O
.:O