has_accessible_cathedral_tier_2_upgrade_site_trigger

has_accessible_cathedral_tier_2_upgrade_site_trigger = {
	trigger_if = {
		limit = {
			NOT = {
				this = faith.religious_head
			}
			is_clergy = no
		}
		any_sub_realm_county = {
			any_county_province = {
				is_valid_cathedral_upgrade_spot_in_province_trigger = yes
			}
		}
	}
	trigger_else = {
		faith = {
			any_faith_ruler = {
				highest_held_title_tier >= tier_county
				any_realm_county = {
					any_county_province = {
						is_valid_cathedral_upgrade_spot_in_province_trigger = yes
					}
				}
			}
		}
	}
}

As written in game/common/scripted_triggers/pam_scripted_triggers.txt.