Decompose it into BCNF
Westfield
987-65-4321
Joe
Seattle
123-45-6789
Fred
City
SSN
Name
908-555-1234
987-65-4321
908-555-2121
987-65-4321
206-555-6543
123-45-6789
206-555-1234
123-45-6789
PhoneNumber
SSN
SSN à Name, City