9
 The subject is the Old Testament patriarch Abraham and his descendants : Isaac , Abraham 's younger son , born to his wife , Sarah ; and Ishmael , his first-born son , the child of Sarah 's handmaid , Hagar . 
 Hagar, Ishmael; Abraham, Ishmael; Abraham, Isaac
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 Hagar, Ishmael; Abraham, Ishmael; Abraham, Isaac