4457
Although all of the currently available H2 - receptor antagonists have shown the propensity to cause delirium , only two previously reported cases have been associated with famotidine .
 Disease: delirium; Chemical: famotidine
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: delirium; Chemical: famotidine