Show the crime rate of counties with a city having white percentage more than 90.
CREATE TABLE county_public_safety (Crime_rate VARCHAR, County_ID VARCHAR); CREATE TABLE city (County_ID VARCHAR, White INTEGER)
[SQL] SELECT T2.Crime_rate FROM city AS T1 JOIN county_public_safety AS T2 ON T1.County_ID = T2.County_ID WHERE T1.White > 90 [/SQL]