With no explanation, label each line with "O", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
When
she
started
work
on
her
second
album
,
Madonna
felt
that
her
first
album
had
succeeded
in
introducing
her
``
street-smart
dance
queen
''
persona
,
and
she
wanted
to
solidify
and
build
upon
that
concept
.
When:O
she:O
started:O
work:O
on:O
her:O
second:O
album:O
,:O
Madonna:person-artist/author
felt:O
that:O
her:O
first:O
album:O
had:O
succeeded:O
in:O
introducing:O
her:O
``:O
street-smart:O
dance:O
queen:O
'':O
persona:O
,:O
and:O
she:O
wanted:O
to:O
solidify:O
and:O
build:O
upon:O
that:O
concept:O
.:O