instruction:
In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.
question:
Sentence: The number of CGG repeats correlates with penetrance and age of onset . 
 Question: what   correlates  with something?
answer:
The number of CGG


question:
Sentence: `` American Guru : A Story of Love , Betrayal and Healing '' , by William Yenner and other former Cohen student contributors , allege authoritarianism , financial manipulation , physical and psychological abuse in Cohen 's community , and discusses the challenges of healing after leaving the community . 
 Question: who   left something?
answer:
William Yenner and other former Cohen student contributors


question:
Sentence: Following the report , Attorney General Michael Mukasey appointed a special prosecutor to investigate whether former Attorney General Alberto Gonzales and other officials involved in the firings of nine U.S. attorneys broke the law . 
 Question: what should  be investigated?
answer:

whether former Attorney General Alberto Gonzales and other officials involved in the firings of nine U.S. attorneys broke the law .