23853
When the temperature is below 1000 K , the reaction R15 forming the cyclic ether , 2 - methyl - 2 - oxetanol , is dominant ; while the reaction R13 forming acetic acid + ethylene + y OH radical becomes increasingly dominant at temperatures above 1000 K .
 Chemical: cyclic ether; Chemical: 2 - methyl - 2 - oxetanol; Chemical: acetic acid; Chemical: ethylene; Chemical: OH
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: cyclic ether; Chemical: 2 - methyl - 2 - oxetanol; Chemical: acetic acid; Chemical: ethylene; Chemical: OH