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 ":".
Adam
recorded
his
first
demos
with
producer
Rick
Keefer
while
playing
gigs
with
Steeler
as
a
replacement
.
Adam:person-artist/author
recorded:O
his:O
first:O
demos:O
with:O
producer:O
Rick:person-artist/author
Keefer:person-artist/author
while:O
playing:O
gigs:O
with:O
Steeler:person-artist/author
as:O
a:O
replacement:O
.:O