1516
Findings suggest a potential for H ( 3 ) - receptor antagonists in improving the refractory cases of schizophrenia .
 Disease: schizophrenia
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: schizophrenia 
Answer:
 Disease: schizophrenia