25757
Oligonol intake significantly prevented elevation of tympanic ( temperature difference : 0 . 17 degrees C at Post , P < . 05 ; 0 . 17 degrees C at Re - 60 , P < . 05 ) and mean body temperatures ( temperature difference : 0 . 18 degrees C at Post , P < . 05 ; 0 . 15 degrees C at Re - 60 , P < . 05 ) , and lowered concentrations of serum PGE2 ( increased by 13 . 3 % vs . 29 . 6 % at Post , P < . 05 ) and COX - 2 ( increased by 15 . 6 % vs . 21 . 8 % at Post , P < . 05 ) , compared to placebo beverage .
 Chemical: PGE2
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: PGE2