Steve Taylor was in his room lying down for sleep while his mother Katelyn was taking a shower.

史蒂夫·泰勒在他的房间里躺着睡觉，而他的母亲凯特琳正在洗澡。

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CTA spokeswoman Katelyn Thrall says it isn't clear what caused the derailment and an investigation is being done.

运输局发言人凯特琳 斯拉尔说目前还不清楚什么原因导致脱轨，相关调查已经完成。

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Katelyn had an allergic reaction and died after eating peanuts in the Chinese food her class had brought in for a holiday party.

WSJ: Finding Food Allergy Allies

The recent legislation in Illinois to ensure schools are equipped with epinephrine began after the 2010 death of Katelyn Carlson, a seventh grader in the Edison Regional Gifted Center in the Albany Park area of Chicago.

WSJ: Finding Food Allergy Allies