Table: ahsabkab_vallis
Columns: name
latitude
longitude
diameter_km
year_named

Question: What is the Diameter (km) of the Valle with a Longitude of 152.5e named before 1997?
SQL: SELECT MAX("diameter_km") FROM ahsabkab_vallis WHERE "longitude" = '152.5e' AND "year_named" < 1997

Question: What is the Year named of the Ganga Valles?
SQL: SELECT MAX("year_named") FROM ahsabkab_vallis WHERE "name" = 'ganga valles'

Question: What is the Latitude of the Alajen Vallis named after 1997?
SQL: SELECT "latitude" FROM ahsabkab_vallis WHERE "year_named" > 1997 AND "name" = 'alajen vallis'