Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: The sun and the moon appear to be about the same size in the sky because the moon is smaller in diameter and is closer to earth than the sun.

Output: Which statement best explains why the Sun and the Moon appear to be about the same size in the sky?


Input: Consider Input: The ileocecal valve, a sphincter, is usually in a constricted state, but when motility in the ileum increases, this sphincter relaxes, allowing food residue to enter the first portion of large intestine.

Output: The ileocecal valve, a sphincter, is usually in a constricted state, but when motility in the ileum increases, this sphincter relaxes, allowing food residue to enter the first portion of what?


Input: Consider Input: Soluble minerals and clays accumulate in subsoil soil layer, allowing it to hold more water.
Output: Soluble minerals and clays accumulate in what soil layer, allowing it to hold more water?