In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

Ex Input:
When Nadal was 12, he won the Spanish and European tennis titles in his age group and was playing tennis and football all the time. Nadal's father made him choose between football and tennis so that his school work would not deteriorate entirely. Nadal said: 'I chose tennis. Football had to stop straight away.'

Ex Output:
where did rafael nadal win his first tennis title


Ex Input:
Nuclear fusion powers a star for most of its life. Initially the energy is generated by the fusion of hydrogen atoms at the core of the main-sequence star. Later, as the preponderance of atoms at the core becomes helium, stars like the Sun begin to fuse hydrogen along a spherical shell surrounding the core. This process causes the star to gradually grow in size, passing through the subgiant stage until it reaches the red giant phase. Stars with at least half the mass of the Sun can also begin to generate energy through the fusion of helium at their core, whereas more-massive stars can fuse heavier elements along a series of concentric shells. Once a star like the Sun has exhausted its nuclear fuel, its core collapses into a dense white dwarf and the outer layers are expelled as a planetary nebula. Stars with around ten or more times the mass of the Sun can explode in a supernova as their inert iron cores collapse into an extremely dense neutron star or black hole. Although the universe is not old enough for any of the smallest red dwarfs to have reached the end of their lives, stellar models suggest they will slowly become brighter and hotter before running out of hydrogen fuel and becoming low-mass white dwarfs.

Ex Output:
what characteristic of helium makes it a major constituent of the pulsating star mechanism


Ex Input:
The Canadian prime minister serves at Her Majesty's pleasure, meaning the post does not have a fixed term. Once appointed and sworn in by the governor general, the prime minister remains in office until he or she resigns, is dismissed, or dies. The lifespan of parliament was limited by the constitution to five years and, though the governor general may still, on the advice of the prime minister, dissolve parliament and issue the writs of election prior to the date mandated by the Canada Elections Act; the King -- Byng Affair was the only time since Confederation that the governor general deemed it necessary to refuse his prime minister's request for a general vote. As of 2007, with an amendment to the Elections Act, Section 56.1 (2) was changed to limit the term of a majority government to four (4) years, with election day being set as the third Monday in October of the 4th calendar year after the previous polling date.

Ex Output:

how many years can the prime minister of canada serve


