How is B related to G?
I. D is the unmarried nephew of F, who is the paternal aunt of A, who is the son of E, who has a grandson B.
II. C is the daughter in law of H, who is the brother of F and has only one granddaughter G.
III. C has two children out of which none is married.
From I and II III is not needed and is insignificant as the relationship between B and G can be determined from I and II only.
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