Scenario

A client has a list of property title numbers and owners. Each title number is associated with additional information -- address, sales information, and phone number.

However, the additional information is stored in a separate place, and requires authentication to access.

Your job is to merge all of the information into the same list.

Concretely, turn this:

Property TitleOwnersAddressPhone NumberLast Sale
AA1234/01John Smith, Mary Smith
BB5678/02John Doe
....

Into this:

Property TitleOwnersAddressPhone NumberLast Sale
AA1234/01John Smith, Mary Smith123 Something Street, Somewhere123-45671997
BB5678/02John Doe456 Another Street, Somewhere Elsemissing2002
..........