Complex sentence: Over-all responsibility for the Bumper program was given to the General Electric Company and were included in the Hermes project, and the Jet Propulsion Laboratory was assigned responsibility for the theoretical investigations required, the design of the second stage and basic design of the separation system.
Split into simpler sentences: Over-all responsibility for the Bumper program was given to the General Electric Company and was included in the Hermes project. The Jet Propulsion Laboratory was assigned responsibility for the theoretical investigations required, design of the second stage, and basic design of the separation system.