What is {son of} of {brother} of {Ali al-Hadi} ?
Who is the nephew of Ali al - Haidi?
Who is Ali al-Haidi's  nephew?
SELECT ?z WHERE { ?e property:father ?z . resource:Ali_al-Hadi property:sibling ?e }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q315377> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3373>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?X . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?X. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P22> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q315377 wdt:P3373 ?X . ?X wdt:P22 ?answer}
Muhammad al-Jawad