Complex sentence: A scene graph is a general data structure commonly used by vector-based graphics editing applications and modern computer games, which arranges the logical and often (but not necessarily) spatial representation of a graphical scene.
Split into simpler sentences: A scene graph is a general data structure commonly used by vector-based graphics editing applications and modern computer games. The scene graph is a structure that arranges the logical and often (but not necessarily) spatial representation of a graphical scene.