context: Soisalo is an area between the Kallavesi and Haukivesi and the Leppävirta and Heinävesi routes on the borders of Northern Savonia and South Savo. It is the largest island in Finland [1] and at the same time the largest inland waterway in Europe. It covers an area of ​​1638 square kilometers.
question: What is Finland's Largest Island?
answers.text: Soisalo