9113
Because exact parsing with a PCFG-LA is NP-hard , several approximations are described and empirically compared .
 used for: PCFG-LA, exact parsing
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:
 used for: PCFG-LA, exact parsing