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

[EX Q]: NASA has held a memorial ceremony to mark the fifth anniversary of the Space Shuttle Columbia disaster.
[EX A]: NASA has held a memorial ceremony to mark the fifth anniversary of the Space Shuttle Columbia disaster .

[EX Q]: After birth, the cub was immediately taken into the arms of its mother.
[EX A]: After birth , the cub was immediately taken into the arms of its mother .

[EX Q]: When AOL was issued with an advance copy of the report, StopBadware.org was "very impressed" with their response, and that they look forward to working with AOL.
[EX A]:
When AOL was issued with an advance copy of the report , StopBadware.org was `` very impressed '' with their response , and that they look forward to working with AOL .