Examine the head and tail of the 2006 men's file. Look at both the character matrix in the list called men Res Mat and the character vector in the list called men Files (see Section 2.2). (Recall that the desired character matrix in men Res Mat and the character vector in men Files both correspond to the element named "2006"). What is wrong with the hometown? Examine the header closely to figure out how this error came about. Modify the extract Variables () function to fix the problem.