6651
The class of languages generated is shown to lie strictly between the context-free languages and the indexed languages .
 conjunction: context-free languages, indexed languages
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:
 conjunction: context-free languages, indexed languages