6041
We have explored the mechanism of action of the fibronectin splicing enhancer and found that the SE element is required for efficient assembly of early splicing complexes , allowing a more efficient interaction of the U2 snRNP with branch site sequences .
 GENE: fibronectin splicing enhancer; GENE: U2 snRNP
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: fibronectin splicing enhancer, U2 snRNP 
Answer:
 GENE: fibronectin splicing enhancer; GENE: U2 snRNP