Table: greifswald_npp
Columns: unit
type
net_power
total_power
finish_construction

Question: Which type had the unit greifswald - 7 (kgr 7) ?
SQL: SELECT "type" FROM greifswald_npp WHERE "unit" = 'greifswald - 7 (kgr 7)'

Question: Which unite had the type wwer-440/213?
SQL: SELECT "unit" FROM greifswald_npp 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 greifswald_npp 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 greifswald_npp WHERE "type" = 'wwer-440/230' AND "finish_construction" = '24.10.1977'