624
The key idea is to successively `` ground '' the policy evaluations using real-life trials , but to rely on the approximate model to suggest local changes .
 real-life trials, policy evaluations
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 real-life trials, policy evaluations