class Scene
{
	1 scenes -> * NonPlayerCharacter nonPlayerCharacters;
	1 scenes -> 1 Terrain terrains;
	1 scenes -> * Entity entities;
	1 scenes -> * ActivityArea activityAreas;
	1 scened -> * Solidity solidities;
}

class NonPlayerCharacter
{
	name;
	description;
}

class Terrain
{
	type;
}

class Entity
{
	description;
}

class ActivityArea
{
	description;
}

class Solidity
{
	description;
}
