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In order to determine if PPA / caffeine can lead to stroke in normotensive and / or hypertensive rats , we administered the combination in six times the allowed human dose calculated on a per weight basis for the rats two times per day for five days .
 Chemical: PPA; Chemical: caffeine; Disease: stroke; Disease: hypertensive
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: PPA; Chemical: caffeine; Disease: stroke; Disease: hypertensive