At stake is some $ 4 billion , the value of a roughly 50 percent interest in Sumner Redstone 's National Amusements , the movie theater company that in turn owns controlling shares in Viacom , CBS and Midway Games .
Sumner Redstone /business/person/company Viacom
Sumner Redstone /business/company_shareholder/major_shareholder_of Viacom
Sumner Redstone /business/person/company CBS
Viacom /business/company/major_shareholders Sumner Redstone
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Viacom
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Sumner Redstone
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Sumner Redstone
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Viacom
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Sumner Redstone
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