instruction:
In this task, given a sentence in the English language, your task is to convert it into English Tokens.
question:
It was then delayed until February 27, but was then delayed indefinitely on February 20 after NASA discovered an issue with the hydrogen control valves.
answer:
It was then delayed until February 27 , but was then delayed indefinitely on February 20 after NASA discovered an issue with the hydrogen control valves .

question:
In a Voice of America interview shortly before he was poisoned by a radioactive substance polonium-210, former Russian spy Litvinenko had accused Putin of ordering the murder of Russian journalist Anna Politkovskaya to silence her and intimidate other independent journalists.
answer:
In a Voice of America interview shortly before he was poisoned by a radioactive substance polonium-210 , former Russian spy Litvinenko had accused Putin of ordering the murder of Russian journalist Anna Politkovskaya to silence her and intimidate other independent journalists .

question:
The Electronic Frontier Foundation represented the anonymous critic and the Internet Archive, and Landmark withdrew its subpoena in November 2006 in exchange for a promise from the anonymous critic not to repost the video.
answer:
The Electronic Frontier Foundation represented the anonymous critic and the Internet Archive , and Landmark withdrew its subpoena in November 2006 in exchange for a promise from the anonymous critic not to repost the video .