2586
In addition , crocin in the mentioned dose could significantly attenuated learning and memory impairment in treated STZ - injected group in passive avoidance test .
 Chemical: crocin; Disease: learning and memory impairment; Chemical: STZ
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: crocin, learning and memory impairment, STZ 
Answer:
 Chemical: crocin; Disease: learning and memory impairment; Chemical: STZ