Sentence:  Mercer stammered , not knowing what B ' dikkat meant , and the two-nosed man answered for him , `` I think he has a nice baby head , but it <WSD>is</WSD> n't big enough for you to take yet '' . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)