With no explanation, label each line with "building-other", "O", "person-actor", "building-hotel", "person-artist/author", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
They
were
the
opening
act
for
Petula
Clark
,
Steve
and
Eydie
,
Joan
Rivers
at
Caesars
Palace
and
Bally
's
Las
Vegas
,
and
toured
with
Bob
Hope
,
Louis
Prima
,
Jerry
Vale
and
many
more
entertainers
.
They:O
were:O
the:O
opening:O
act:O
for:O
Petula:person-artist/author
Clark:person-artist/author
,:O
Steve:person-artist/author
and:O
Eydie:person-artist/author
,:O
Joan:person-actor
Rivers:person-actor
at:O
Caesars:building-other
Palace:building-other
and:O
Bally:building-hotel
's:building-hotel
Las:building-hotel
Vegas:building-hotel
,:O
and:O
toured:O
with:O
Bob:person-actor
Hope:person-actor
,:O
Louis:person-artist/author
Prima:person-artist/author
,:O
Jerry:person-actor
Vale:person-actor
and:O
many:O
more:O
entertainers:O
.:O