6624
Starting from the C - terminus , the C - 1 position is the most relevant position in the model ; this is followed by position C - 4 .
 Chemical: C
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: C 
Answer:
 Chemical: C