21116
A study of parabens and bisphenol A in surface water and fish brain tissue from the Greater Pittsburgh Area .
 Chemical: parabens; Chemical: bisphenol A
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: parabens; Chemical: bisphenol A