Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.

[EX Q]: Another trooper, with a pistol barrel, knocks the pistol from someone's lifted hand.
[EX A]: One trooper smacks the back of someone's head with a pistol barrel.

[EX Q]: Now outside a nightclub, green laser lights and strobe flashes illuminate the exterior of the building.
[EX A]: He helps his son up.

[EX Q]: A group of people wearing vests kayak down a river.
[EX A]:
A person stands by a river.