CREATE TABLE "managerial_changes" (
  "team" text,
  "outgoing_manager" text,
  "date_outgoing" text,
  "reason_of_departure" text,
  "replaced_by" text,
  "date_of_replacement" text
);

Question: Why did the manager who departed on August 1, 2008 leave?
SQL: SELECT "reason_of_departure" FROM "managerial_changes" WHERE "date_outgoing"='august 1, 2008';

Question: On what date did the manager for PSIS Semarang take over for the manager that was sacked?
SQL: SELECT "date_of_replacement" FROM "managerial_changes" WHERE "reason_of_departure"='sacked' AND "team"='psis semarang';

Question: Why did the manager who departed on August 1, 2008 leave?
SQL: SELECT "reason_of_departure" FROM "managerial_changes" WHERE "date_outgoing"='august 1, 2008';

Question: When did Peter Butler leave his team?
SQL: SELECT "date_outgoing" FROM "managerial_changes" WHERE "outgoing_manager"='peter butler';

Question: When did the manager take over for the manager that left on August 20, 2008?
SQL: SELECT "date_of_replacement" FROM "managerial_changes" WHERE "date_outgoing"='august 20, 2008';