Complex sentence: The Volga-Finnic languages, also referred to as Volgaic are languages of Volga Finns, speakers of Finno-Ugric languages' subgroup containing Mari language (formerly Cheremis) and Mordvinic languages, which in turn comprises Moksha and Erzya.
Split into simpler sentences: The Volga-Finnic languages, also referred to as Volgaic are a subgroup of the Uralic languages, the languages of Volga Finns. The group contains Mari language (formerly Cheremis) and Mordvinic languages, which in turn comprises Moksha and Erzya.