Task: Explanation
Input (English): Meirchion Gul was probably a late 5th-century king of Rheged, a Brythonic realm in the area of sub-Roman known as the "Hen Ogledd" (in the North of England and Southern Scotland today). Question: Meirchion Gul was a King of which Brittonic-speaking region of Northern England and Southern Scotland? Answer: Rheged
Output (English): Meirchion Gul was probably a late 5thcentury king of Rheged, a Brythonic realm in the area of subRoman known as the Hen Ogledd in the North of England and Southern Scotland today.