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

Ex Input:
The breakthrough involves a gene known as TRESK, thought to control the brain's reaction to pain: if it is defective, then many normal activities and actions will be painful.

Ex Output:
The breakthrough involves a gene known as TRESK , thought to control the brain 's reaction to pain : if it is defective , then many normal activities and actions will be painful .

Ex Input:
Interpol has issued an "Orange Notice" for the leader of southeast Asian Jemaah Islamiyah, Mas Selamat bin Kastari, who escaped from a detention center Wednesday.

Ex Output:
Interpol has issued an '' Orange Notice '' for the leader of southeast Asian Jemaah Islamiyah , Mas Selamat bin Kastari , who escaped from a detention center Wednesday .

Ex Input:
The tiger was shot dead by police who were called to the scene.

Ex Output:
The tiger was shot dead by police who were called to the scene .