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.

[Q]: Lunar distance (LD or Δ ⊕ L (\ textstyle \ Delta _ (\ oplus L))), also called Earth -- Moon distance, Earth -- Moon characteristic distance, or distance to the Moon, is a unit of measure in astronomy. It is the average distance from the center of Earth to the center of the Moon. More technically, it is the mean semi-major axis of the geocentric lunar orbit. It may also refer to the time-averaged distance between the centers of the Earth and the Moon, or less commonly, the instantaneous Earth -- Moon distance. The lunar distance is approximately a quarter of a million miles.
[A]: what is the distance between earth and moon


[Q]: 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.
[A]: what characteristic of helium makes it a major constituent of the pulsating star mechanism


[Q]: The play opens with Hermia, who is in love with Lysander, resistant to her father Egeus' demand that she wed Demetrius, whom he has arranged for her to marry. Helena meanwhile pines unrequitedly for Demetrius. Enraged, Egeus invokes an ancient Athenian law before Duke Theseus, whereby a daughter must marry the suitor chosen by her father, or else face death. Theseus offers her another choice: lifelong chastity while worshipping the goddess Artemis as a nun.
[A]:
who loves who in a midsummer nights dream


