TASK DEFINITION: In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
PROBLEM: Neurotransmitter filled packets in the presynaptic neuron are called?

SOLUTION: Vesicle cluster

PROBLEM: When did nigeria become a federation of 19 states?

SOLUTION: 1976

PROBLEM: What was the last colony to leave the british empire?

SOLUTION:
Hong Kong