Input (grade 13): Because of the high background density of asteroids in this part of space, one might expect that a great number of interlopers (asteroids unrelated to the collision that formed the family) would be present.
Output (grade 10): Because of the high background density of asteroids in this part of space, one might expect that a great number of asteroids unrelated to the collision that made the family would be present. However, few have been found.