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

[Q]: He also warned that up to 250 million people in Africa could face what he called "increased water stress because of climate change."
[A]: He also warned that up to 250 million people in Africa could face what he called `` increased water stress because of climate change . ''


[Q]: The United States military Strategic Command (STRATCOM) has said that the 'fireballs' spotted over areas of Texas in the United States on Sunday February 15, are not related to the collision of a U.S. and Russian satellite in space.
[A]: The United States military Strategic Command -LRB- STRATCOM -RRB- has said that the ` fireballs ' spotted over areas of Texas in the United States on Sunday February 15 , are not related to the collision of a U.S. and Russian satellite in space .


[Q]: After appearing for the third time at the 1960 contest he made his final appearance at the 1962 contest.
[A]:
After appearing for the third time at the 1960 contest he made his final appearance at the 1962 contest .