With no explanation, label each line with "O", "person-director", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
was
the
only
musical
film
directed
by
Fred
Zinnemann
,
and
Agnes
de
Mille
choreographed
.
It:O
was:O
the:O
only:O
musical:O
film:O
directed:O
by:O
Fred:person-director
Zinnemann:person-director
,:O
and:O
Agnes:person-artist/author
de:person-artist/author
Mille:person-artist/author
choreographed:O
.:O