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

Example Input: The bombing was blamed on insurgents, but it is unclear which group is responsible.
Example Output: The bombing was blamed on insurgents , but it is unclear which group is responsible .

Example Input: The December 2005 study was seen at the time as a major boost to the credibility of Wikipedia.
Example Output: The December 2005 study was seen at the time as a major boost to the credibility of Wikipedia .

Example Input: Mukherjee said he would meet the Prime Minister because he was going for treatment and when he was abroad, Singh was in hospital.
Example Output:
Mukherjee said he would meet the Prime Minister because he was going for treatment and when he was abroad , Singh was in hospital .