Sentence:  The <WSD>NINA</WSD> loan is the basis for the apocryphal “NINJA” loan that is often used as an example of excesses in the boom-era mortgage market. NINJA supposedly stood for “no-income, no job, no assets,” but no such loan ever existed. Also, the <WSD>NINA</WSD> code, which did exist, did not signify a loan to a borrower with no income. Rather, the code signified that the lender had no information about the borrower's income. 
Meaning of the word marked with <WSD> tags:  A mortgage loan to a borrower with no verified or stated income or assets.