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

Ex 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.

Ex 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?


Ex Input:
The reverse process of moving material into a cell is the process of exocytosis.

Ex Output:
The reverse process of moving material into a cell is the process of what?


Ex Input:
Placental mammals give birth to relatively large fetuses.

Ex Output:
Do placental mammals give birth to relatively small or large fetuses?