6566
5F - 2 ' dUrd and 5F - 2 ' dCtd are not incorporated into nucleic acids but act as prodrugs by inhibiting thymidylate synthase as 5F - dUMP .
 Chemical: 5F - 2 ' dUrd; Chemical: 5F - 2 ' dCtd; Chemical: 5F - dUMP
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: 5F - 2 ' dUrd, 5F - 2 ' dCtd, 5F - dUMP 
Answer:
 Chemical: 5F - 2 ' dUrd; Chemical: 5F - 2 ' dCtd; Chemical: 5F - dUMP