Detailed Instructions: In this task, given a sentence in the English language, your task is to convert it into English Tokens.
See one example below:
Problem: The incident, involving a lorry and a Ford Mondeo, occurred at around 01:00 UTC today (02:00 local time) on the A607 road.
Solution: The incident , involving a lorry and a Ford Mondeo , occurred at around 01:00 UTC today -LRB- 02:00 local time -RRB- on the A607 road .
Explanation: The above sentence is correctly translated from English to English Tokens.

Problem: A gene has been discovered that turns stem cells into cancer killers, promising new treatments that boost the body's ability to destroy tumors.
Solution:
A gene has been discovered that turns stem cells into cancer killers , promising new treatments that boost the body 's ability to destroy tumors .