In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

Input: Consider Input: who created the classification system that divides galaxies by shape

Output: Edwin Hubble


Input: Consider Input: who stars in the movie i can only imagine

Output: Trace Adkins


Input: Consider Input: where does the heat from geothermal energy come from


Output: radioactive decay of minerals