With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
As
on
previous
albums
,
the
songs
are
all
based
on
J.
R.
R.
Tolkien
's
Middle-earth
sagas
.
As:O
on:O
previous:O
albums:O
,:O
the:O
songs:O
are:O
all:O
based:O
on:O
J.:person-other
R.:person-other
R.:person-other
Tolkien:person-other
's:O
Middle-earth:O
sagas:O
.:O