14348
A single - nucleotide polymorphism ( SNP ) in the alpha 5 nicotinic acetylcholine receptor subunit gene , rs16969968 , has been repeatedly associated with both smoking and respiratory health phenotypes .
 Chemical: acetylcholine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: acetylcholine