10479
A strong correlation between the measured estrogenic activity and the concentration of the sediment - associated 4 - iso - nonylphenol underlines the relevance of this compound class as a xenoestrogen in the catchment area of the river Saale .
 Chemical: 4 - iso - nonylphenol
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: 4 - iso - nonylphenol