7805
Roy Jackson , whose grandfather William Rockefeller was once the president of Standard Oil , and his wife , Gretchen , have spared no expense when it comes to Barbaro 's recovery .
 person of company: William Rockefeller, Standard Oil; company founders: Standard Oil, William Rockefeller
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:  William Rockefeller, Standard Oil; Standard Oil, William Rockefeller 
Answer:
 person of company: William Rockefeller, Standard Oil; company founders: Standard Oil, William Rockefeller