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In the model-based policy search approach to reinforcement learning -LRB- RL -RRB- , policies are found using a model -LRB- or `` simulator '' -RRB- of the Markov decision process .
 model-based policy search approach, reinforcement learning -LRB- RL -RRB-; Markov decision process, policies
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:
 model-based policy search approach, reinforcement learning -LRB- RL -RRB-; Markov decision process, policies