Show names of cities and names of counties they are in.
SELECT T1.Name ,  T2.Name FROM city AS T1 JOIN county_public_safety AS T2 ON T1.County_ID  =  T2.County_ID
names of cities refers to T1.Name; names of counties they are in refers to T2.Name; JOIN operation is used to combine rows from two or more tables, based on a related column between them, which is County_ID in this context;