16893
This study suggests that the avoidance behaviour test for organophosphorus - contaminated soils could be supported by specific biomarkers to facilitate a better understanding of pesticide exposure and toxicity during this test .
 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