3138
A case of thoraco - abdominal rigidity leading to respiratory failure is described in the post - operative period in an elderly patient who received a moderate dose of fentanyl .
 Disease: rigidity; Disease: respiratory failure; Chemical: fentanyl
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: rigidity, respiratory failure, fentanyl 
Answer:
 Disease: rigidity; Disease: respiratory failure; Chemical: fentanyl