15752
Ten organophosphorus pesticides ( OPs ) were found in concentrations ranging from 0 . 004 to 0 . 257 mg / kg .
 Chemical: organophosphorus
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: organophosphorus