Question: When did the construction of the unit Chinon B1 with net power of 905 MW start?
SQL: SELECT "Construction start" FROM "1-12983929-1" WHERE "Net power" = '905 MW' AND "Unit" = 'Chinon B1';

Question: What's the total power of the unit whose construction finished on 14.06.1963?
SQL: SELECT "Total power" FROM "1-12983929-1" WHERE "Construction finish" = '14.06.1963';

Question: How many different values of total power are there for the unit whose construction started on 01.03.1977 and whose commercial operation started on 01.02.1984?
SQL: SELECT COUNT("Total power") FROM "1-12983929-1" WHERE "Construction start" = '01.03.1977' AND "Commercial operation" = '01.02.1984';

Question: What's the shut down state of the unit that's been in commercial operation since 01.02.1984?
SQL: SELECT "Shut down" FROM "1-12983929-1" WHERE "Commercial operation" = '01.02.1984';

Question: When was the start of the construction of the unit that's been in commercial operation since 04.03.1987?
SQL: SELECT "Construction start" FROM "1-12983929-1" WHERE "Commercial operation" = '04.03.1987';