I couldn't say, but I know it's Europe's third largest island.
i have heard it is the  third-largest island in Europe
I have never been to Ireland before. Oh, the island in the North Atlantic? That's interesting. Is Ireland part of the UK? It's beyond me, but Great Britain sits to its east, across the North Channel. I see. That is interesting. When was Ireland founded?
Ireland is the third-largest island in Europe.