You will be given a definition of a task first, then some input of the task.
In this task, given a sentence in the English language, your task is to convert it into English Tokens.

Soon Serbia, Croatia and Slovenia together formed "Kingdom of Serbs, Croats and Slovenians", which later changed the name into Kingdom Yugoslavia.
Output:
Soon Serbia , Croatia and Slovenia together formed `` Kingdom of Serbs , Croats and Slovenians '' , which later changed the name into Kingdom Yugoslavia .