With no explanation, label each line with "O", "person-artist/author", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
David
Ian
,
who
produces
the
musical
,
received
the
stage
rights
from
Kevin
Costner
and
Lawrence
Kasdan
.
David:person-artist/author
Ian:person-artist/author
,:O
who:O
produces:O
the:O
musical:O
,:O
received:O
the:O
stage:O
rights:O
from:O
Kevin:person-other
Costner:person-other
and:O
Lawrence:person-other
Kasdan:person-other
.:O