       return "The text defines \\(Z\\) as a matrix where 'each row has exactly one entry with value 1, corresponding to the assigned cluster of data point.'";
                case 8:
                    return "For \\(j=1,\\ldots,n\\) and \\(\\ell=1,\\ldots,k\\), set \\(Z_{j\\ell} = 1\\) if \\(c(j) = \\ell\\) and 0 otherwise, and let \\(Z\\) be the \\(n \\times k\\) matrix with entries \\(Z = [Z_{j\\ell}]_{j,\\ell}\\). That is, row \\(j\\) has exactly one entry with value \\(1\\), corresponding to the assi