With no explanation, label each line with "location-GPE", "O", "person-actor", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
the
1960s
,
two
very
different
performers
took
the
role
:
the
Australian
Dame
Joan
Sutherland
and
the
Turkish
Leyla
Gencer
.
In:O
the:O
1960s:O
,:O
two:O
very:O
different:O
performers:O
took:O
the:O
role:O
::O
the:O
Australian:location-GPE
Dame:person-actor
Joan:person-actor
Sutherland:person-actor
and:O
the:O
Turkish:location-GPE
Leyla:person-actor
Gencer:person-actor
.:O