4398
Methional and some phenols were suggested as markers of freezing time .
 Chemical: Methional; Chemical: phenols
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Methional, phenols 
Answer:
 Chemical: Methional; Chemical: phenols