I have a nephew, Gavin.
Gavin is MY nephew.
You have a cousin, Raymond.
Raymond is YOUR cousin.
Gavin has an uncle, Neil.
Neil is HIS uncle.
Claire has a son, Gavin.
Gavin is HER son.
Neil and I have a sister, Claire.
Claire is OUR sister.
Neil and Claire have a brother, Sammy.
Sammy is THEIR brother.
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