With no explanation, label each line with "O", "person-artist/author", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Bargiel
’
s
father
Adolph
was
a
well-known
piano
and
voice
teacher
while
his
mother
Marianne
Tromlitz
had
previously
been
unhappily
married
to
Clara
’
s
father
,
Friedrich
Wieck
.
Bargiel:person-artist/author
’:O
s:O
father:O
Adolph:person-artist/author
was:O
a:O
well-known:O
piano:O
and:O
voice:O
teacher:O
while:O
his:O
mother:O
Marianne:person-artist/author
Tromlitz:person-artist/author
had:O
previously:O
been:O
unhappily:O
married:O
to:O
Clara:person-artist/author
’:O
s:O
father:O
,:O
Friedrich:person-other
Wieck:person-other
.:O