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The choline acetyltransferase ( ChAT ) activator , which enhances cholinergic transmission via an augmentation of the enzymatic production of acetylcholine ( ACh ) , is an important factor in the treatment of Alzheimer ' s disease ( AD ) .
 Chemical: choline; Chemical: acetylcholine; Chemical: ACh; Disease: Alzheimer ' s disease; Disease: AD
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: choline; Chemical: acetylcholine; Chemical: ACh; Disease: Alzheimer ' s disease; Disease: AD