22140
CONCLUSIONS : Genetic factors are likely primarily responsible for differential antidepressant - like effects of lithium in the C57BL / 6J and BALB / cJ strains .
 Chemical: lithium
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: lithium 
Answer:
 Chemical: lithium