Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE perpetrator (Country VARCHAR, Injured INTEGER)

### Question ###
Show the countries that have both perpetrators with injures more than 50 and perpetrators with injures smaller than 20.

### Accurate SQL ###

SELECT Country FROM perpetrator WHERE Injured > 50 INTERSECT SELECT Country FROM perpetrator WHERE Injured < 20