Table: fornax_rupes
Columns: name
latitude
longitude
diameter_km
year_named
name_origin

Question: What was the year when the diameter was 729 km?
SQL: SELECT "year_named" FROM fornax_rupes WHERE "diameter_km" = 729

Question: What is the highest diameter when the latitude is 43.5s?
SQL: SELECT MAX("diameter_km") FROM fornax_rupes WHERE "latitude" = '43.5s'