19887
Roundup at different concentrations ( 0 , 1 , 2 , 3 , 4 and 8mg acid equivalent ( ae ) / L ) , tested in a 2 x 6 factorial design in the presence and absence of predator stress , induced concentration - dependent lethality in tadpoles .
 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