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 .
William Rockefeller /business/person/company Standard Oil
Standard Oil /business/company/founders William Rockefeller
NNP NNP , WP$ NN NNP NNP VBD RB DT NN IN NNP NNP , CC PRP$ NN , NNP , VBP VBN DT NN WRB PRP VBZ TO NNP POS NN .
William Rockefeller
PERSON
Standard Oil
ORGANIZATION
/business/person/company
Standard Oil
ORGANIZATION
William Rockefeller
PERSON
/business/company/founders