148398
In bacteria , two classes of riboswitch are known to regulate gene s that are involved in the synthesis or transport of pre-queuosine1 , a precursor to queuosine : PreQ1-I riboswitch es and PreQ1-II riboswitch es .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None