4468
Thirty - five patients with primary pulmonary hypertension and 85 matched controls were recruited over 32 months ( 1992 - 1994 ) in Belgium .
 Disease: primary pulmonary hypertension
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: primary pulmonary hypertension 
Answer:
 Disease: primary pulmonary hypertension