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As a contribution to this issue we decided to research the possible passage of mannitol into the brain after administration to 21 brain tumor patients .
 Chemical: mannitol; Disease: brain tumor
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: mannitol; Disease: brain tumor