4306
Both 5 ' - AMN and 5 ' - MABN had high affinity for kappa - receptors ( K ( i ) 1 . 36 +/- 0 . 98 and 0 . 27 +/- 0 . 08 , respectively ) and were revealed as potent kappa - antagonists ( pA ( 2 ) 7 . 43 and 8 . 18 , respectively ) and mu - receptor antagonists ( pA ( 2 ) 7 . 62 and 7 . 85 , respectively ) in the ileum .
 Chemical: 5 ' - AMN; Chemical: 5 ' - MABN
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: 5 ' - AMN, 5 ' - MABN 
Answer:
 Chemical: 5 ' - AMN; Chemical: 5 ' - MABN