With no explanation, label each line with "organization-showorganization", "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Their
sound
is
similar
to
that
of
Los
Chichos
,
a
Spanish
rumba
band
that
was
popular
in
the
1970s
.
Their:O
sound:O
is:O
similar:O
to:O
that:O
of:O
Los:location-GPE
Chichos:location-GPE
,:location-GPE
a:O
Spanish:location-GPE
rumba:organization-showorganization
band:organization-showorganization
that:O
was:O
popular:O
in:O
the:O
1970s:O
.:O