Complex sentence: In 1959,15 municipal electric companies established the'Association of Experimental Reactor GmbH' (AVR Ltd) to demonstrate the feasibility and viability of a gas-cooled, graphite-moderated high temperature reactor.
Split into simpler sentences: In 1959,15 municipal electric companies established the'Association of Experimental Reactor GmbH' (AVR Ltd). Its purpose was to demonstrate the feasibility and viability of a gas-cooled, graphite-moderated high temperature reactor.