Question: What is the chassis after 1991?
SQL: SELECT "Chassis" FROM "2-1218386-1" WHERE "Year" > 1991.0;

Question: What are the average points after 1992?
SQL: SELECT AVG("Points") FROM "2-1218386-1" WHERE "Year" > 1992.0;

Question: What is the sum of points in 1991, for Footwork A11C chassis?
SQL: SELECT SUM("Points") FROM "2-1218386-1" WHERE "Year" = 1991.0 AND "Chassis" = 'Footwork A11C';