7698
However , just under half of the research studies can be rejected on the grounds that they did not actually test steroids , but compounds or mixtures that were only presumed to behave as steroids ( or modulators of steroids ) on the basis of their effects in vertebrates ( e . g . Bisphenol - A , nonylphenol and sewage treatment effluents ) .
 Chemical: steroids; Chemical: steroids; Chemical: steroids; Chemical: Bisphenol - A; Chemical: nonylphenol
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: steroids, steroids, steroids, Bisphenol - A, nonylphenol 
Answer:
 Chemical: steroids; Chemical: steroids; Chemical: steroids; Chemical: Bisphenol - A; Chemical: nonylphenol