Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Send 1 Dragon monster from your Deck to the GY, then, if that monster in your GY is a Dragon Normal Monster, you can send 1 more Dragon monster from your Deck to the GY. You can only activate 1 "Dragon Shrine" per turn.
--竜の霊廟
--Dragon Shrine
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOGRAVE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.tgfilter(c)
	return c:IsRace(RACE_DRAGON) and c:IsAbleToGrave()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.tgfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,nil,1,tp,LOCATION_DECK)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.tgfilter,tp,LOCATION_DECK,0,1,1,nil)
	local tc=g:GetFirst()
	if tc and Duel.SendtoGrave(tc,REASON_EFFECT)>0 and tc:IsLocation(LOCATION_GRAVE) and tc:IsRace(RACE_DRAGON) and tc:IsType(TYPE_NORMAL)
		and Duel.IsExistingMatchingCard(s.tgfilter,tp,LOCATION_DECK,0,1,nil)
		and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
		local g1=Duel.SelectMatchingCard(tp,s.tgfilter,tp,LOCATION_DECK,0,1,1,nil)
		Duel.SendtoGrave(g1,REASON_EFFECT)
	end
end