Sentence:  Thus his <WSD>persistence</WSD> values for some stem frequencies per meaning is : stem identical in 8 languages , 100 % ; stem frequencies 7 and 1 , 86 % ; stem frequencies 4 and 4 , 64 % ; stem frequencies 4 , 3 , and 1 , 57 % . 
Meaning of the word marked with <WSD> tags:  the property of a continuous and connected period of time