With no explanation, label each line with "O", "person-actor", "art-film", "person-director", "person-other", "art-broadcastprogram", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
``
Desi
Boyz
``
had
Krishika
launching
the
talented
Rohit
Dhawan
,
son
of
David
Dhawan
in
his
directorial
debut
.
``:O
Desi:art-film
Boyz:art-film
``:O
had:O
Krishika:person-director
launching:O
the:O
talented:O
Rohit:person-actor
Dhawan:person-actor
,:O
son:O
of:O
David:person-other
Dhawan:person-other
in:O
his:O
directorial:O
debut:O
.:O