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

And in females the life expectancy is 75-years-old, previously 55-years-old.
And in females the life expectancy is 75-years-old , previously 55-years-old .

Last year, another zoo worker was seriously injured by Tatiana while attempting to feed her, but survived the attack.
Last year , another zoo worker was seriously injured by Tatiana while attempting to feed her , but survived the attack .

The bombing was blamed on insurgents, but it is unclear which group is responsible.
The bombing was blamed on insurgents , but it is unclear which group is responsible .