Table: aikhylu_chasma
Columns: name
latitude
longitude
diameter_km
year_named

Question: What name in a year after 1997 has a longitude of 213.0e?
SQL: SELECT "name" FROM aikhylu_chasma WHERE "year_named" > 1997 AND "longitude" = '213.0e'

Question: How many years correspond to longitude of 36.8e and diameter greater than 697?
SQL: SELECT COUNT("year_named") FROM aikhylu_chasma WHERE "longitude" = '36.8e' AND "diameter_km" > 697