Table: aibarchin_planitia
Columns: name
latitude
longitude
diameter_km
year_named

Question: Which Diameter (km) has a Name of alma-merghen planitia, and a Year named smaller than 1997?
SQL: SELECT MAX("diameter_km") FROM aibarchin_planitia WHERE "name" = 'alma-merghen planitia' AND "year_named" < 1997

Question: Which Longitude has a Latitude of 73.0s, and a Name of aibarchin planitia?
SQL: SELECT "longitude" FROM aibarchin_planitia WHERE "latitude" = '73.0s' AND "name" = 'aibarchin planitia'

Question: Which Latitude has a Year named smaller than 1997, and a Name of aino planitia?
SQL: SELECT "latitude" FROM aibarchin_planitia WHERE "year_named" < 1997 AND "name" = 'aino planitia'