Roy Jackson 's grandfather William Rockefeller was once the president of Standard Oil , and Jackson added to his family fortune as an owner of a minor league baseball team and as a sports agent .
Standard Oil /business/company/founders William Rockefeller
William Rockefeller /business/person/company Standard Oil
NNP NNP POS NN NNP NNP VBD RB DT NN IN NNP NNP , CC NNP VBD TO PRP$ NN NN IN DT NN IN DT JJ NN NN NN CC IN DT NNS NN .
Standard Oil
ORGANIZATION
William Rockefeller
PERSON
/business/company/founders
William Rockefeller
PERSON
Standard Oil
ORGANIZATION
/business/person/company