8637
These findings indicate that inhibition of cGMP - preferring PDE is involved in the locomotor activating effects of the acute administration of paraxanthine .
 Chemical: cGMP; Chemical: paraxanthine
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: cGMP; Chemical: paraxanthine