3608
Clinical evaluation on combined administration of oral prostacyclin analogue beraprost and phosphodiesterase inhibitor cilostazol .
 Chemical: prostacyclin; Chemical: beraprost; Chemical: cilostazol
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: prostacyclin; Chemical: beraprost; Chemical: cilostazol