22160
After 96 h copper ( 10 mu g L ( - 1 ) initial concentration ) elimination increased from 36 . 39 +/- 5 . 86 - 60 . 70 +/- 6 . 06 % when Forum concentration increased from 0 to 500 mu g L ( - 1 ) .
 Chemical: copper; Chemical: Forum
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: copper; Chemical: Forum