14083
Three Sec7 guanine nucleotide exchange factors ( GEFs ) activate ADP - ribosylation factors ( ARFs ) to facilitate coating of transport vesicles within the secretory and endosomal pathways .
 Chemical: guanine; Chemical: nucleotide; Chemical: ADP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: guanine; Chemical: nucleotide; Chemical: ADP