Within the input text, identify the entity type of 'United States'.
Options: organization, person, location

" Cash Equivalents " are ( a ) marketable direct obligations issued or unconditionally guaranteed by the United States or any agency or any State thereof having maturities of not more than one ( 1 ) year from the date of acquisition ; ( b ) commercial paper maturing no more than one ( 1 ) year after its creation and having the highest rating from either Standard & Poor ' s Ratings Group or Moody ' s Investors Service , Inc ., and ( c ) Agent ' s certificates of deposit issued maturing no more than one ( 1 ) year after issue .
location