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7.59 Two nouns (group genitive)

If possession is shared by two or more subjects, add ’s to the last word only:

  • Adam and Eve’s progeny
  • the Prince and Princess’s visit
  • Rodgers and Hammerstein’s musicals

To indicate individual possession, ’s is added to each element in the series:

  • Abraham’s and Lot’s descendants
  • Rodgers’ and Hammerstein’s private lives