building_requirement_castle_city_church

building_requirement_castle_city_church = {
	trigger_if = {
		limit = { has_holding_type = castle_holding }
		has_building_or_higher = castle_$LEVEL$
	}
	trigger_else_if = {
		limit = { has_holding_type = city_holding }
		has_building_or_higher = city_$LEVEL$
	}
	trigger_else_if = {
		limit = { has_holding_type = church_holding }
		has_building_or_higher = temple_$LEVEL$
	}
	trigger_else_if = {
		limit = { has_holding_type = temple_citadel_holding }
		has_building_or_higher = temple_citadel_$LEVEL$
	}
	trigger_else = {
		custom_description = {
			text = "building_requirement_castle_city_church_failed"
			always = no
		}
	}
}

As written in game/common/scripted_triggers/00_building_requirement_triggers.txt.