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 ":".
It
has
been
attributed
to
,
among
others
,
Clemens
Brentano
,
Friedrich
Schlegel
,
Caroline
Schelling
and
Karl
Friedrich
Gottlob
Wetzel
.
It:O
has:O
been:O
attributed:O
to:O
,:O
among:O
others:O
,:O
Clemens:person-artist/author
Brentano:person-artist/author
,:O
Friedrich:person-artist/author
Schlegel:person-artist/author
,:O
Caroline:person-artist/author
Schelling:person-artist/author
and:O
Karl:person-artist/author
Friedrich:person-artist/author
Gottlob:person-artist/author
Wetzel:person-artist/author
.:O