Text:"S&P: for example, s&p NAME_1 and NAME_2 have changed their eligibility criteria for inclusion of shares of public companies on certain indices, including the s&p 500, to exclude companies with multiple classes of shares and companies whose public shareholders hold no more than 5% of total voting power from being added to such indices".Find the abbreviation S&P and give me the full term, just the word, no other stuff,format the answer in python dictionary with key is S&P and value is the full term.