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

Example Input: The report concludes with a description of the roles of the various disciplines required to "shift humanity's current trajectory on to a path that will remain within the biological capacity of the planet".
Example Output: The report concludes with a description of the roles of the various disciplines required to '' shift humanity 's current trajectory on to a path that will remain within the biological capacity of the planet '' .

Example Input: According to the witness reports the Al-Shabaab rebels took the town after two hours of fighting on Sunday.
Example Output: According to the witness reports the Al-Shabaab rebels took the town after two hours of fighting on Sunday .

Example Input: Japan currently carries high levels of debt, estimated to be about ten trillion dollars, which is expected to make additional government spending for rebuilding efforts difficult.
Example Output:
Japan currently carries high levels of debt , estimated to be about ten trillion dollars , which is expected to make additional government spending for rebuilding efforts difficult .