Detailed Instructions: 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.
Problem:Passage: Still, stock-index funds are expected to continue launching big programs through the market. Several Big Board firms are organizing to complain about program trading and the exchange's role in it.
Solution:
What event has already happened?