TASK DEFINITION: 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.
PROBLEM: Context : Izak Davel (born 1 July 1983 in South Africa) is a South African actor, singer, dancer and male model.
Answer : male

SOLUTION: What gender is Izak Davel?

PROBLEM: Context : An order to enter the BTR-60P into Soviet Army service was issued on 13 December 1959.
Answer : 13 December 1959

SOLUTION: What year did BTR-60 come into use?

PROBLEM: Context : Main Force Assault (ISBN 0-8041-0103-5) is a Vietnam War novel by David Sherman published in 1987 by the Ivy Book imprint of Ballantine Books.
Answer : Vietnam

SOLUTION:
Which place does Main Force Assault exist in?