Fill in the Blank with the Correct Word: Robert’s father is Mark

Hint: This looks like a tough one at first instance, but actually is an easy and solvable puzzle.

Fill in the blank with the correct word.

Robert’s father is Mark. Then Mark is the ________of Robert’s father.

Just read it carefully and you will get the answer.

So were you able to solve the riddle? Leave your answers in the comment section below.

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