6353
Grade 4 - 5 adverse events ( AEs ) possibly related to the drug : grade 5 , 1 sudden death ; grade 4 , 1 pulmonary embolus .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None