Instructions: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : Solar Turbines Incorporated, a wholly owned subsidiary of Caterpillar Inc., designs and manufactures industrial gas turbines for on- and off-shore electrical power generation, for marine propulsion and for producing, processing and transporting natural gas and oil.
Question : What company is Solar Turbines part of?
Output:
Caterpillar Inc.