With no explanation, label each line with "organization-media/newspaper", "art-broadcastprogram", "O", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
They
debuted
in
1978
on
the
Rai
1
variety
show
``
Io
e
la
Befana
``
.
They:O
debuted:O
in:O
1978:O
on:O
the:O
Rai:organization-media/newspaper
1:organization-media/newspaper
variety:O
show:O
``:O
Io:art-broadcastprogram
e:art-broadcastprogram
la:art-broadcastprogram
Befana:art-broadcastprogram
``:O
.:O