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The results show that the features in terms of which we formulate our heuristic principles have significant predictive power , and that rules that closely resemble our Horn clauses can be learnt automatically from these features .
 feature of: features, heuristic principles
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 feature of: features, heuristic principles