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Tensions have run high at the site for centuries , but when Mr. Reich and Ms. Korot , who are married , wrote the work in 1993 , they envisioned its more peaceful potential : Abraham 's sons , Isaac and Ishmael -LRB- the fathers of the Jews and Arabs , respectively -RRB- , had , after all , come together to bury their father at the site .
 children: Abraham, Isaac; children: Abraham, Ishmael
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Abraham, Isaac; Abraham, Ishmael 
Answer:
 children: Abraham, Isaac; children: Abraham, Ishmael