Complex sentence: As the story begins, Barry Allen wakes up in his office and discovers that his mother is alive, with no trace of Superman, Wonder Woman and Aquaman leading their respective nations in a war, his wife Iris West is unmarried and himself currently powerless.
Split into simpler sentences: As the story begins, Barry Allen wakes up in his office and discovers that his mother is alive. No trace of Superman, Wonder Woman and Aquaman leading their respective nations in a war, his wife Iris West is unmarried, and himself currently powerless.