3173
Angiotensin IV ( AngIV : VYIHPF ) - related peptides have long been recognized as procognitive agents with potential as antidementia therapeutics .
 Chemical: Angiotensin IV; Chemical: AngIV
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: Angiotensin IV, AngIV 
Answer:
 Chemical: Angiotensin IV; Chemical: AngIV