Transcript possessive shortform

Can you decide if the ‘s is a possessive
or a short form in these sentences?
Examples:
My brother’s name is Bob. = possessive
Linda’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