10726
On the contrary , Al treatment caused a significant increase in the formation of conjugated dienes , which were observed to be reduced on Zn co - treatment .
 Chemical: Al; Chemical: dienes; Chemical: Zn
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: Al; Chemical: dienes; Chemical: Zn