Given the task definition and input, reply with output. You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

A sphere (from Greek σφαῖρα -- sphaira, ``globe, ball'') is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a ``circle'' circumscribes its ``disk'').

is a circle the same as a sphere?