has Proceedings Bibliography/has Bibliography no effect problem

[WolfgangFahl]

There are quite a few event and event series entries trying to set bibliography information:

https://confident.dbis.rwth-aachen.de/or/index.php?search=bibliography&title=Special%3ASearch&go=Go

Most of the statements have no effect as outlined in the MigrationPlan Summary.
Also the only existing property is not set properly.
For a start we need a list of problematic events and rate them with pain 8 or higher.

[MusaabKh]

267 Events have the field "has Proceedings Bibliography"

[WolfgangFahl]

And non ends up in the triplestore:

-- 
-- prediate usage in OpenResearch clone 2021-04-26
-- WF 2021-04-26
-- 
-- where predicate like "Has Proceed%"
select count(*),predicate 
from smw_triples
where predicate like "Has_Proc%"
group by predicate
order by 1 desc

count(*)	predicate
2	Has_proceedings_chair

Therefore labeled KGLF