9. The method as recited in claim 6 , wherein computing a similarity score comprises: identifying a length of a longest prefix of the contexts of one of the set of candidates, wherein the prefix is shared by at least one of the set of seed examples; and identifying a length of a longest suffix of the contexts of the one of the set of candidates, wherein the suffix is shared by at least one of the set of seed examples.
6. The method as recited in claim 5 , further comprising: computing a similarity score for each of the set of candidates with respect to the set of seed examples; and comparing the similarity scores of the set of candidates.