2685
In the saline treated group , the first significant decline in passive avoidance response was observed at four weeks , and complete memory loss was found five weeks after the acquisition of the passive avoidance task .
 Disease: memory loss
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: memory loss