P is the sister of Q. R is the father of Q. How is R related to P?

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Accepted Answer

1. Given: $P$ is the sister of $Q$.  
2. Given: $R$ is the father of $Q$.  
3. Siblings have the same parents, so the father of $Q$ is also the father of $P$.  
4. Therefore, $R$ is the father of $P$.

FINAL_ANSWER: a

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