22874
We provide here evidence that neurofibromin , via its Ras guanosine triphosphatase - activating activity , controls ERK1 / 2 - dependent fibroblast growth factor receptor ( FGFR ) signaling in chondrocytes .
 Chemical: guanosine
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: guanosine