What is the {fortified line} for {named after} of {Paul von Hindenburg}
 select distinct ?sbj where { ?sbj wdt:P138 wd:Q2667 . ?sbj wdt:P31 wd:Q2973801 } 
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P138> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q2667> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q2973801> } 
Not Applicable