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 ":".
Due
to
stylistic
influence
from
Wolfram
von
Eschenbach
(
died
c.
1220
)
,
it
can
not
have
been
written
earlier
than
1220
.
Due:O
to:O
stylistic:O
influence:O
from:O
Wolfram:person-artist/author
von:person-artist/author
Eschenbach:person-artist/author
(:O
died:O
c.:O
1220:O
):O
,:O
it:O
can:O
not:O
have:O
been:O
written:O
earlier:O
than:O
1220:O
.:O