Sentence:  The persistent horror of having a malformed child has , I believe , been reduced , not because we have gained any control over this misfortune , but precisely because we have learned that we have so <WSD>little</WSD> control over it . 
Meaning of the word marked with <WSD> tags:  (quantifier used with mass nouns) small in quantity or degree; not much or almost none or (with `a') at least some