MODで新しく特殊効果を出すためにModifierを追加するには
					
数多くの項目を追加する必要が出てくる
				
INSERT INTO Types (Type, Kind)
VALUES ('TRAIT_GRASS_FOOD', 'KIND_TRAIT')
;
INSERT INTO Traits (TraitType, Name, Description)
VALUES ('TRAIT_GRASS_FOOD', 'LOC_TRAIT_GRASS_FOOD_NAME', 'LOC_TRAIT_GRASS_FOOD_DESCRIPTION')
;
INSERT INTO CivilizationTraits (CivilizationType, TraitType)
VALUES ('CIVILIZATION_JAPAN', 'TRAIT_GRASS_FOOD')
;
INSERT INTO Modifiers (ModifierId, ModifierType, SubjectRequirementSetId)
VALUES ('TRAIT_INCREASED_GRASS_FOOD', 'MODIFIER_PLAYER_ADJUST_PLOT_YIELD', 'PLOT_HAS_GRASS_REQUIREMENTS')
;
INSERT INTO ModifierArguments (ModifierId, Name, Value)
VALUES
	('TRAIT_INCREASED_GRASS_FOOD', 'YieldType', 'YIELD_FOOD')
,	('TRAIT_INCREASED_GRASS_FOOD', 'Amount', 1)
;
INSERT INTO TraitModifiers (TraitType, ModifierId)
VALUES ('TRAIT_GRASS_FOOD', 'TRAIT_INCREASED_GRASS_FOOD')
;
INSERT INTO RequirementSets (RequirementSetId, RequirementSetType)
VALUES ('PLOT_HAS_GRASS_REQUIREMENTS', 'REQUIREMENTSET_TEST_ANY')
;
INSERT INTO RequirementSetRequirements (RequirementSetId, RequirementId)
VALUES
	('PLOT_HAS_GRASS_REQUIREMENTS', 'REQUIRES_PLOT_HAS_GRASS')
,	('PLOT_HAS_GRASS_REQUIREMENTS', 'REQUIRES_PLOT_HAS_GRASS_HILLS')
;
INSERT INTO Requirements (RequirementId, RequirementType)
VALUES
	('REQUIRES_PLOT_HAS_GRASS', 'REQUIREMENT_PLOT_TERRAIN_TYPE_MATCHES')
,	('REQUIRES_PLOT_HAS_GRASS_HILLS', 'REQUIREMENT_PLOT_TERRAIN_TYPE_MATCHES')
;
INSERT INTO RequirementArguments (RequirementId, Name, Value)
VALUES
	('REQUIRES_PLOT_HAS_GRASS', 'TerrainType', 'TERRAIN_GRASS')
,	('REQUIRES_PLOT_HAS_GRASS_HILLS', 'TerrainType', 'TERRAIN_GRASS_HILLS')
;
					
						上記の内容をMODで追加すると
						
日本文明に"日本の領土内の草原もしくは草原(丘陵)タイルに食料+1"の文明特性が追加される