With no explanation, label each line with "person-politician", "location-GPE", "O", "person-actor", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
In
the
sketch
,
Sudekis
'
Romney
entered
the
scene
by
announcing
``
that
's
right
,
America
,
I
'm
back
.
In:O
the:O
sketch:O
,:O
Sudekis:person-actor
':O
Romney:person-politician
entered:O
the:O
scene:O
by:O
announcing:O
``:O
that:O
's:O
right:O
,:O
America:location-GPE
,:O
I:O
'm:O
back:O
.:O