... of the NCsthey cover, paraphrasing the relation between the nouns, and seeing if that paraphrase was the same for all the NCsin the group. If it was the same, then the current levels of the ... examine the problem space, the method of determining the rela-tions, the accuracy of the results, and the problem of am-biguity. The paper concludes with related work and adiscussion of future ... senses for words at different levels of the hierarchy. Table 1 showsa histogram of the number of senses for the first noun of all the unique NCs in our collection, the average degree of ambiguity and...