While Sumner Redstone controls two-thirds of National Amusements , his two children each control a sixth .
Sumner Redstone /business/person/company National Amusements
IN NNP NNP VBZ NNS IN NNP NNP , PRP$ CD NNS DT NN DT JJ .
Sumner Redstone
PERSON
National Amusements
ORGANIZATION
/business/person/company