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Total nitrogen ( TN ) was inversely related to Chl a , and total phosphorus was inversely related to respiration ( R ) rates .
 Chemical: nitrogen; Chemical: Chl a; Chemical: phosphorus
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: nitrogen; Chemical: Chl a; Chemical: phosphorus