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Ornithine is believed to increase ammonia fixation into glutamine in muscle tissue and glutamine is subsequently thought to react with phenylacetate forming phenylacetylglutamine ( PAGN ) which is excreted in urine .
 Chemical: Ornithine; Chemical: ammonia; Chemical: glutamine; Chemical: glutamine; Chemical: phenylacetate; Chemical: phenylacetylglutamine; Chemical: PAGN
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: ammonia; Chemical: glutamine; Chemical: glutamine; Chemical: phenylacetate; Chemical: phenylacetylglutamine; Chemical: PAGN