Question: What is the orbital regime of launches greater than 4 and failures less than 2?
SQL: SELECT "Orbital regime" FROM "2-13894411-10" WHERE "Launches" > 4.0 AND "Failures" < 2.0;

Question: What is the total of medium earth orbital regime, accidentally achieved and successes greater than 3?
SQL: SELECT SUM("Accidentally Achieved") FROM "2-13894411-10" WHERE "Orbital regime" = 'medium earth' AND "Successes" > 3.0;

Question: What is the greatest successes that have failures greater than 1 and launches less than 28?
SQL: SELECT MAX("Successes") FROM "2-13894411-10" WHERE "Failures" > 1.0 AND "Launches" < 28.0;

Question: What is the total failures of heliocentric orbit orbital regimes and launches less than 1?
SQL: SELECT SUM("Failures") FROM "2-13894411-10" WHERE "Orbital regime" = 'heliocentric orbit' AND "Launches" < 1.0;