The common noun sally is a word for asudden charge out of a besieged place against the enemy; a sortie. The possessive form for the common noun is sally's.
The proper noun Sally is the name of a person. The possessive form for the proper noun Sally is Sally's.
The singular possessive is fish's.
Buzz's is the singular possessive.
The possessive form is Amos's.
Mary's is the singular possessive form.
The singular possessive form is foot's.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
Sally
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive pronouns are "my," "mine," "your," "yours," "his," "her," and "its."
The singular possessive of dish is dish's
The singular possessive is Martin's.
The singular possessive is fish's.
Grave's is the singular possessive.
The singular possessive form of "test" is "test's".
Buzz's is the singular possessive.
The singular possessive is biker's; the plural possessive is bikers'.
The singular possessive of criteria is criteria's.