Complex sentence: Petrozavodsk (Karelian/Vepsian /) is the capital city of the Republic of Karelia, Russia, which stretches along the western shore of Lake Onega for some.
Split into simpler sentences: Petrozavodsk (Karelian/Vepsian /) is the capital city of the Republic of Karelia, Russia. It stretches along the western shore of the Lake Onega for some.