2351
We show here that the in vitro transcription extract contains a binding activity that is specific for the initiator element and thus may participate in recruiting RNA polymerase II to the SL RNA gene promoter .
 GENE: RNA polymerase II
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: RNA polymerase II