Question: Which Country has Entities of EMSA?
SQL: SELECT "Country" FROM "2-19001916-2" WHERE "Entities" = 'EMSA';

Question: Which Power (MW) has a Voltage (kV) of 500, and a Country of Argentina?
SQL: SELECT AVG("Power (MW)") FROM "2-19001916-2" WHERE "Voltage (kV)" = 500.0 AND "Country" = 'Argentina';

Question: How much Voltage (kV) has a Country of argentina, and a Power (MW) larger than 30, and a Supply point of yacyretá?
SQL: SELECT COUNT("Voltage (kV)") FROM "2-19001916-2" WHERE "Country" = 'argentina' AND "Power (MW)" > 30.0 AND "Supply point" = 'yacyretá';