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Ornithine ( Orn ) plays a main role in the biosynthesis of many amino acids , nicotinic alkaloids , and polyamines in tobacco .
 Chemical: Ornithine; Chemical: Orn; Chemical: amino acids; Chemical: nicotinic alkaloids; Chemical: polyamines
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: Ornithine; Chemical: Orn; Chemical: amino acids; Chemical: nicotinic alkaloids; Chemical: polyamines