CREATE TABLE table_15561 ("Unit" CLOB, "Type" CLOB, "Net Power" CLOB, "Total Power" CLOB, "Finish construction" CLOB)

Which type had the unit greifswald - 7 (kgr 7) ?
SELECT "Type" FROM table_15561 WHERE "Unit" = 'greifswald - 7 (kgr 7)'
SELECT "Type" FROM "table_15561" WHERE "Unit" = 'greifswald - 7 (kgr 7)'