Complex sentence: Space opera is a subgenre of science fiction that emphasizes space warfare and often romantic, often melodramatic adventure, set mainly or entirely in outer space, usually involving conflict between opponents possessing advanced abilities, futuristic weapons and other sophisticated technology.
Split into simpler sentences: Space opera is a subgenre of science fiction that emphasizes space warfare and often romantic, often melodramatic adventure, set mainly or entirely in outer space. It usually involves conflict between opponents possessing advanced abilities, futuristic weapons and other sophisticated technology.