Instructions: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Input: Context : The Bravia Chaimite is an armored vehicle with all wheel drive axles built by the Portuguese company Bravia and used by the Portuguese Army in the Portuguese colonial wars in Angola, Mozambique and Portuguese Guinea, from 1967 to 1974 when it ended.
Answer : 1967
Output:
What was the year Bravia Chaimite entered service?