What is the {headland} for {deepest point} of {Bonn}
What's Bonn's deepest point headland?
 select distinct ?obj where { wd:Q586 wdt:P1589 ?obj . ?obj wdt:P31 wd:Q191992 } 
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q586> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1589> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q191992> } 
What is the deepest point headland of Bonn?