Question: Was Heinrich Himmler ever a commanders of Army Group Oberrhein?
SPARQL query: ASK WHERE { <http://dbpedia.org/resource/Army_Group_Oberrhein_(Germany)> <http://dbpedia.org/property/notableCommanders> <http://dbpedia.org/resource/Heinrich_Himmler> }
Answer: [Yes], Heinrich Himmler was a notable commander of Army Group Oberrhein.