4041
Furthermore , we collected experimentally validated RNA - SF interactions , including relevant information on the RNA - binding sites , such as the genes where these sites lie , their genomic coordinates , the splicing effects , the experimental procedures used , as well as the corresponding bibliographic references .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None