3482
This approach has not only contributed to a fundamental understanding of structure and function of a large family of hydrolase - like proteins possessing functions other than catalysis , but also has been used to develop new practical strategies for scavenging and antidotal activity in cases of organophosphate insecticide or nerve agent exposure .
 Chemical: organophosphate
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: organophosphate