With no explanation, label each line with "organization-showorganization", "location-GPE", "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
In
2017
,
the
band
opened
for
Swedish
heavy
metal
band
Katatonia
at
Saarang
,
Indian
Institute
of
Technology
Madras
,
and
followed
it
up
with
a
European
summer
tour
supporting
American
thrash
metal
band
Sacred
Reich
on
the
30
Years
of
Ignorance
tour
.
In:O
2017:O
,:O
the:O
band:O
opened:O
for:O
Swedish:location-GPE
heavy:O
metal:O
band:O
Katatonia:organization-showorganization
at:O
Saarang:organization-education
,:O
Indian:organization-education
Institute:organization-education
of:organization-education
Technology:organization-education
Madras:organization-education
,:O
and:O
followed:O
it:O
up:O
with:O
a:O
European:location-GPE
summer:O
tour:O
supporting:O
American:location-GPE
thrash:O
metal:O
band:O
Sacred:organization-showorganization
Reich:organization-showorganization
on:O
the:O
30:O
Years:O
of:O
Ignorance:O
tour:O
.:O