Question: Which type had the unit Greifswald - 7 (KGR 7) ?
SQL: SELECT "Type" FROM "2-12950463-1" WHERE "Unit" = 'Greifswald - 7 (KGR 7)';

Question: Which unite had the type WWER-440/213?
SQL: SELECT "Unit" FROM "2-12950463-1" WHERE "Type" = 'WWER-440/213';

Question: What was the date that construction was finished when the unit was Greifswald - 4 (KGR 4)?
SQL: SELECT "Finish construction" FROM "2-12950463-1" WHERE "Unit" = 'Greifswald - 4 (KGR 4)';

Question: What was the net power, when the type was WWER-440/230, and when construction was finished on 24.10.1977?
SQL: SELECT "Net Power" FROM "2-12950463-1" WHERE "Type" = 'WWER-440/230' AND "Finish construction" = '24.10.1977';