Sentence:  Some predictions had been made concerning factors R , N , I and Co on these inventories which appeared to be directly related to control and security aspects of personality functioning which were hypothesized as <WSD>being</WSD> of importance in differential Kohnstamm reactivity . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)