Can you decide if the ‘s is a possessive or a short form in these sentences?

Examples:

My brother’s name is Bob. = possessiveLinda’s my best friend. = short form

Brenda’s from Birmingham.

short form

This is David’s bike.

possessive

Is Bob Janet’s brother?

possessive

Janet’s from London.

short form

Janet’s husband’s from Nice.

possessive/short form

Look! It’s raining again!

short form

Brian’s wife’s French.

possessive/short form

These are Shirley’s books.

possessive

That bike isn’t David’s.

possessive

That’s an old car, isn’t it?

short form

Rosemary’s son’s in Paris.

possessive/short form

Tom’s sister’s name’s Jane.

possessive/possessive/short form

Daniel’s car’s grey.

possessive/short form

David’s going to see Bob’s new house.

short form/possessive

That’s John’s car.

short form/possessive