With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
formed
relations
with
other
vanguardists
in
Berlin
and
practiced
various
experimental
techniques
such
as
solarization
,
multiple
images
and
photograms
,
for
which
reason
twelve
of
his
works
were
considered
degenerate
art
by
the
Nazi
regime
and
were
prohibited
.
He:O
formed:O
relations:O
with:O
other:O
vanguardists:O
in:O
Berlin:location-GPE
and:O
practiced:O
various:O
experimental:O
techniques:O
such:O
as:O
solarization:O
,:O
multiple:O
images:O
and:O
photograms:O
,:O
for:O
which:O
reason:O
twelve:O
of:O
his:O
works:O
were:O
considered:O
degenerate:O
art:O
by:O
the:O
Nazi:organization-politicalparty
regime:O
and:O
were:O
prohibited:O
.:O