CREATE TABLE "reactor_data" (
  "unit" text,
  "reactortype" text,
  "net_capacity" text,
  "gross_capacity" text,
  "construction_started" text,
  "electricity_grid" text,
  "commercial_operation" text,
  "shutdown" text
);

Question: Which Reactortype has a gross capacity of 417 mw and an Electricity Grid of 27.12.1971?
SQL: SELECT "reactortype" FROM "reactor_data" WHERE "gross_capacity"='417 mw' AND "electricity_grid"='27.12.1971';

Question: Which Unit's Construction started on 01.07.1967?
SQL: SELECT "unit" FROM "reactor_data" WHERE "construction_started"='01.07.1967';

Question: Which Commercial Operation has both a Gross Capacity of 417 mw and an Electricity Grid 27.12.1971?
SQL: SELECT "commercial_operation" FROM "reactor_data" WHERE "gross_capacity"='417 mw' AND "electricity_grid"='27.12.1971';

Question: When did the Electricity Grid 28.12.1972 officially shutdown?
SQL: SELECT "shutdown" FROM "reactor_data" WHERE "electricity_grid"='28.12.1972';

Question: Which Electricity Grid started its Commercial Operation of 24.03.1973?
SQL: SELECT "electricity_grid" FROM "reactor_data" WHERE "commercial_operation"='24.03.1973';