Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.
Input Format
The STATION table is described as follows:
Field
Type
ID
INTEGER
CITY
VARCHAR(21)
STATE
VARCHAR(2)
LAT_N
NUMERIC
LONG_W
where LAT_N is the northern latitude and LONG_W is the western longitude.