The agency was hired by Wal-Mart 's founder , Sam Walton . ''
Sam Walton /business/person/company Wal-Mart
Wal-Mart /business/company/founders Sam Walton
DT NN VBD VBN IN NNP POS NN , NNP NNP . ''
Sam Walton
PERSON
Wal-Mart
ORGANIZATION
/business/person/company
Wal-Mart
ORGANIZATION
Sam Walton
PERSON
/business/company/founders