4445
Muscle rigidity was induced by haloperidol ( 2 . 5 mg / kg i . p . ) .
 Disease: Muscle rigidity; Chemical: haloperidol
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:
 Disease: Muscle rigidity; Chemical: haloperidol