The possessive form of the singular noun policewoman is policewoman's.
Example: The policewoman's favorite partner was a German shepherd.
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policewoman's
policewoman's
The plural possessive is policewomen's.
Policewomans'
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 "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.