4076
To better understand the potential exposures introduced by fipronil contamination , we conducted subchronic toxicity tests with larval fathead minnows ( Pimephales promelas ) and waterborne fipronil and its enantiomers and exposed juvenile fathead minnows to fipronil - spiked sediment .
 Chemical: fipronil; Chemical: fipronil; Chemical: fipronil
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: fipronil, fipronil, fipronil 
Answer:
 Chemical: fipronil; Chemical: fipronil; Chemical: fipronil