With no explanation, label each line with "art-film", "O", "person-artist/author", "art-broadcastprogram", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
produced
``
Cocaine
Cowboys
,
''
a
rock
and
roll
western
which
starred
Jack
Palance
.
He:O
produced:O
``:O
Cocaine:art-film
Cowboys:art-film
,:O
'':O
a:O
rock:O
and:O
roll:O
western:O
which:O
starred:O
Jack:person-artist/author
Palance:person-artist/author
.:O