With no explanation, label each line with "art-broadcastprogram", "O", "person-other", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
Leno
returned
,
they
have
been
showing
``
The
Tonight
Show
with
Jay
Leno
``
.
After:O
Leno:person-other
returned:O
,:O
they:O
have:O
been:O
showing:O
``:O
The:art-broadcastprogram
Tonight:art-broadcastprogram
Show:art-broadcastprogram
with:art-broadcastprogram
Jay:art-broadcastprogram
Leno:art-broadcastprogram
``:O
.:O