Complex sentence: During the events of "Final Fantasy VII", the Planet's Lifestream is being drained for energy by the Shinra Electric Power Company megacorporation: this is in turn causing the Planet to dangerously weaken, threatening its existence and the existence of life.
Split into simpler sentences: During the events of "Final Fantasy VII", the Planet's Lifestream is being drained for energy by the Shinra Electric Power Company megacorporation. This is in turn causing the Planet to dangerously weaken, threatening its existence and the existence of life.