What are the rules on possessive nouns?
There are 10 rules: 1. Just add [‘s]: A. “the Planet´s survival” (singular nouns, not ending in “-s”); B. “the lioness’s tail” (singular common nouns, ending in “-s” in case the next word does not begin with “s”); C. “most congressmen’s contributions” (plural nouns not ending in “-s”); D. “inspired by my professor’s analysis of the poem” (in case there is joint possession [“professor’s analysis” and “analysis of the poem”]), apply the appropriate rule to the possessive form of an animate noun [such as a person or animal]); E. “my father´s and my mother´s deaths” (in case you have one noun [“deaths”] and two separate possessive forms); F. “the store manager’s daily routine” / “my sister-in-law’s outfit” (in constructions [such as “store manager” and “sister-in-law”], apply the appropriate rule to the word closest to the noun phrase [“daily routine”] or to the noun [“outfit”]). 2. Just add [‘]: A. “the heiress’ statement” (singular common nouns, ending in “-s” in case the next word begin
