Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 Special Summoned monster on either field; send it to the GY, and if you do, Special Summon 1 Level 4 or lower Normal Monster from your hand.
--悪魔への貢物
--Faustian Bargain
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOGRAVE+CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c,ft,tp)
	return c:IsSpecialSummoned() and (ft>0 or (c:GetSequence()<5 and c:IsControler(tp)))
end
function s.spfilter(c,e,tp)
	return c:IsLevelBelow(4) and c:IsType(TYPE_NORMAL) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.filter(chkc,ft,tp) end
	if chk==0 then return ft>-1 and Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil,ft,tp)
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil,ft,tp)
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,g,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) and Duel.SendtoGrave(tc,REASON_EFFECT)>0 
		and tc:IsLocation(LOCATION_GRAVE) and Duel.GetLocationCount(tp,LOCATION_MZONE)>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_HAND,0,1,1,nil,e,tp)
		if #g>0 then
			Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
		end
	end
end