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In the normal - sodium group the highest mean potassium deficit was 176 mmol on day 9 , after which some potassium was regained ; in the low - sodium group the highest deficit was 276 mmol on day 13 .
 Chemical: sodium; Chemical: potassium; Chemical: potassium; Chemical: sodium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: sodium; Chemical: potassium; Chemical: potassium; Chemical: sodium