answer: #Person1# doesn't know whether to believe a man or not. #Person2# asks #Person1# to trust him.
documents: #Person1#: I don't know whether or not to believe him. 
  #Person2#: You can trust him. He always tells the truth. 
  #Person1#: But it's really too important to me. 
  #Person2#: I said you can trust him. You just have to believe it.