genitivpossessive
The genitivpossessive, often referred to as the possessive case, is a grammatical case used in many languages to indicate ownership, possession, or a close relationship between two nouns. In English, it is primarily formed by adding an apostrophe and an 's' (e.g., "the dog's bone") or just an apostrophe to plural nouns ending in 's' (e.g., "the students' papers"). This case answers the question "whose?".
The genitivpossessive can express a variety of relationships beyond simple ownership. It can denote authorship (e.g.,