In this task, given a sentence in the English language, your task is to convert it into English Tokens.

So far, the United States has pledged $1 billion in aid.
So far , the United States has pledged $ 1 billion in aid .

This maternal lineage is now present in all modern polar bears."
This maternal lineage is now present in all modern polar bears . ''

According to the China Internet Network Information Center, which manages the .cn domain, this attack was the largest of its kind.
According to the China Internet Network Information Center , which manages the . cn domain , this attack was the largest of its kind .