CREATE TABLE Services (Service_ID VARCHAR2, Service_Type_Code VARCHAR2)
CREATE TABLE EVENTS (event_details VARCHAR2, Service_ID VARCHAR2)

what are the event details of the services that have the type code 'Marriage'?
SELECT T1.event_details FROM EVENTS AS T1 JOIN Services AS T2 ON T1.Service_ID = T2.Service_ID WHERE T2.Service_Type_Code = 'Marriage'
SELECT "T1"."event_details" FROM "EVENTS" "T1" JOIN "Services" "T2" ON "T1"."Service_ID" = "T2"."Service_ID" AND "T2"."Service_Type_Code" = 'Marriage'