11117
As only limited effects of nicotine and nicotine metabolites were seen , the tobacco - induced platelet inhibition are likely induced by other compounds present in tobacco and tobacco free snuff .
 Chemical: nicotine; Chemical: nicotine
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: nicotine; Chemical: nicotine