Grave's is the singular possessive.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive pronouns are mine, yours, his, hers, and its. The singular possessive adjectives are my, your, his, her, and its.
The singular possessive of dish is dish's
The singular possessive is Martin's.
The singular possessive is fish's.
The singular possessive is test's.
Buzz's is the singular possessive.
The singular possessive is biker's; the plural possessive is bikers'.
There's no such thing as a singular possessive verb. Chris's is a singular possessive noun.
The singular possessive form of horse is horse's.example: My horse's name is Baxter.
Women's is a plural possessive. The singular possessive is woman's