"Who is brother or sister of Khadijah bint Khuwaylid, which has marry is Safiyyah bint ‘Abd al-Muttalib ?"
SELECT ?answer WHERE { wd:Q42034 wdt:P3373 ?answer . ?answer wdt:P26 wd:Q2740828}
khadija bint khuwaylid: Q42034 safiyyah bint ‘abd al-muttalib: Q2740828