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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 .
 used for: model-based policy search approach, reinforcement learning -LRB- RL -RRB-; used for: Markov decision process, policies
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  model-based policy search approach, reinforcement learning -LRB- RL -RRB-; Markov decision process, policies 
Answer:
 used for: model-based policy search approach, reinforcement learning -LRB- RL -RRB-; used for: Markov decision process, policies