CREATE TABLE "wobbe_index_of_common_fuel_gases" (
  "fuel_gas" text,
  "upper_index_kcal_nm_3" real,
  "lower_index_kcal_nm_3" real,
  "upper_index_mj_nm_3" real,
  "lower_index_mj_nm_3" real
);

Question: What is the average upper index MJ/Nm 3 for the upper index Kcal/Nm 3 entry of 19,376?
SQL: SELECT AVG("upper_index_mj_nm_3") FROM "wobbe_index_of_common_fuel_gases" WHERE "upper_index_kcal_nm_3"='19,376';

Question: What is the Upper index Kcal/ Nm 3 of iso-butane, and a Lower index MJ/ Nm 3 smaller than 84.71?
SQL: SELECT COUNT("upper_index_kcal_nm_3") FROM "wobbe_index_of_common_fuel_gases" WHERE "fuel_gas"='iso-butane' AND "lower_index_mj_nm_3"<84.71;

Question: What is the Lower index Kcal/ Nm 3 entry, for the row with entries of an Upper index Kcal/ Nm 3 smaller than 19,376, and a Lower index MJ/ Nm 3 of 74.54?
SQL: SELECT AVG("lower_index_kcal_nm_3") FROM "wobbe_index_of_common_fuel_gases" WHERE "lower_index_mj_nm_3"=74.54 AND "upper_index_kcal_nm_3"<'19,376';

Question: What is the entry for Upper index Kcal/ Nm 3 for the row with an entry that has a Lower index MJ/ Nm 3 of 47.91, and an Upper index MJ/ Nm 3 larger than 53.28?
SQL: SELECT SUM("upper_index_kcal_nm_3") FROM "wobbe_index_of_common_fuel_gases" WHERE "lower_index_mj_nm_3"=47.91 AND "upper_index_mj_nm_3">53.28;

Question: What is the entry for Upper index Kcal/ Nm 3 for the row with an entry that has a Lower index MJ/ Nm 3 larger than 47.91, for propylene, and an Upper index MJ/ Nm 3 larger than 77.04?
SQL: SELECT SUM("upper_index_kcal_nm_3") FROM "wobbe_index_of_common_fuel_gases" WHERE "lower_index_mj_nm_3">47.91 AND "fuel_gas"='propylene' AND "upper_index_mj_nm_3">77.04;

Question: What is the entry for Lower index MJ/ Nm 3 for the row that has an Upper index Kcal/ Nm 3 larger than 19,376, for lpg, and an Upper index MJ/ Nm 3 smaller than 86.84?
SQL: SELECT AVG("lower_index_mj_nm_3") FROM "wobbe_index_of_common_fuel_gases" WHERE "upper_index_kcal_nm_3">'19,376' AND "fuel_gas"='lpg' AND "upper_index_mj_nm_3"<86.84;