Ameliorate the Yalta Conference

Directions: grammatically correct the following sentence(s), in red. There is a missing colon (:), a missing semicolon (;), two missing commas, and one missing apostrophe. 

The Yalta Conference was a meeting of the Big Three Winston Churchill Franklin D. Roosevelt and Joseph Stalin Allied leaders planned for Germanys post-war division into four occupation zones.

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Suggested Correction:

The Yalta Conference was a meeting of the Big Three: Winston Churchill, Franklin D. Roosevelt, and Joseph Stalin; Allied leaders planned for Germany's post-war division into four occupation zones.