19889
The 10 - day LC50 value for Roundup was significantly lower , 2 . 12mgae / L and 1 . 91mgae / L in the absence and presence of predator stress , respectively .
 Chemical: Roundup
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: Roundup