Complex sentence: Lexical evidence for a Finno-Volgaic group is weak as well: less than ten word roots are known that would be shared by all four member groups, while being absent from the other Uralic languages.
Split into simpler sentences: Lexical evidence for a Finno-Volgaic group is weak as well. Less than ten word roots are known that would be shared by all four member groups, while being absent from the other Uralic languages.