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

Ex Input:
"That January 2007 test created a massive amount of debris."

Ex Output:
'' That January 2007 test created a massive amount of debris . ''

Ex Input:
"But I couldn't stop the bleeding because there was so much blood."

Ex Output:
'' But I could n't stop the bleeding because there was so much blood . ''

Ex Input:
According to the Observatory, seismic activity caused a major lahar, similar to a mudslide or landslide, to occur in the Drift River Valley.

Ex Output:
According to the Observatory , seismic activity caused a major lahar , similar to a mudslide or landslide , to occur in the Drift River Valley .