what is the {start time} for {Karlsruhe Institute of Technology} has {manager/director} as {Eberhard Umbach} ?
When was the Karlsruhe Institute of Technology directed by Eberhard Umbach?
When was Eberhard Umbach the director of the Karlsruhe Institute of Technology?
SELECT ?j WHERE { ?z property:director_/_manager resource:Eberhard_Umbach . ?z property:start_time ?j . resource:Karlsruhe_Institute_of_Technology property:director_/_manager ?z }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q309988> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1037> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q77995> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q309988 p:P1037 ?s . ?s ps:P1037 wd:Q77995 . ?s pq:P580 ?value}