Task: Translation
Input (Chinese): 白宫发言人达娜·佩里诺证实了2005年的文件的存在，但没有说像拍头和水刑这样的技术是否构成美国法律规定的“酷刑”。
Output (English): White House spokeswoman Dana Perino confirmed the existence of the 2005 document but did not say whether techniques such as head slapping and waterboarding constitute "torture" under U.S. law.