How many people are there in Nick’s Johnson’s family?

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          Nick Johnson lives with his parents, and his sister. They lives in Wembley, in north London. Nick’s mom is called Sue. She works in a supermarket. His dad is called Jim and he works in a bank. Nick’s sister is called Tracy. She is nine years old. There is also a dog in the family. His name’s Fred.

How many people are there in Nick’s Johnson’s family?