Definition: 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.

Positive Example 1 -
Input: Passage: I submitted the hit. The hit was approved, and then I was paid.
Output: What happened after I submitted the hit?

Positive Example 2 -
Input: Passage: Heavy snow is causing disruption to transport across the UK, with heavy rainfall bringing flooding to the south-west of England. Rescuers searching for a woman trapped in a landslide at her home in Looe, Cornwall, said they had found a body.
Output: What event has started?

Negative Example 1 -
Input: Passage: He will be happy after he attends the party.
Output: Is he happy now?

Negative Example 2 -
Input: Passage: I submitted the hit. The hit was not approved, and then I was not paid.
Output: What did I submit?

Now complete the following example -
Input: Passage: Together with its derivatives, the Kalashnikov rifle has been used by the police and armies of 55 countries and an assortment of guerrillas, terrorists and just plain thugs around the globe. Seventy-five million copies of the rifle have been built since it entered production in February 1947, making it history's most widely distributed weapon.
Output: 



Output:
What event has already finished?
What event has begun but has not finished?
What will happen in the future?
What happened after it entered?
What happened when it entered?
What happened before something was used?
What started before something was used?