Question

Introducing Mary to her friend Anne,Katy said ' her mother is the only daughter of my father' .who is Katy to Mary?

Answer 1

katy is the mother of mary

Answer 2

Since it is written "her mother is the only daughter of my father" it means that Katy is the only daughter of her father and is the mother of Mary. So,
Katy is the mother of Mary.
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