user: Question: What was the net power, when the type was WWER-440/230, and when construction was finished on 24.10.1977?
Columns: ['Unit', 'Type', 'Net Power', 'Total Power', 'Finish construction']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Greifswald - 1 (KGR 1)', 'WWER-440/230', '408 MW', '440 MW', '17.12.1973']
SQL:

assistant: SELECT "Net Power" FROM "Table" WHERE "Type" = 'WWER-440/230' AND "Finish construction" = '24.10.1977';