Q: In this task, a passage will be given and the goal is to generate a question about temporal relations based on that passage. A temporal relation describes the relation between two things with respect to time e.g., something happens/starts/terminates/... immediately/shortly/usually/... before/after/during/... something else.
Your question should include an event, or ask about an event, and should not be a yes/no question.
Passage: The minister denied the kingdom had notified notified any of its customers of any cutbacks in oil supply. Reports attributed to the Japanese foreign ministry said Saudi Arabia told U.S., European and Japanese oil companies of a 15-20 percent cutback in its oil supply in September.
A:
What event has already happened?