Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
FLIP: Return 2 Fusion-Material monsters that were sent to the Graveyard as a result of a Fusion Summon to your hand.
--物資調達員
--Supply
local s,id=GetID()
function s.initial_effect(c)
	--Flip
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_FLIP)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.filter(c,e)
	return c:IsReason(REASON_FUSION) and c:IsMonster() and c:IsAbleToHand() and c:IsCanBeEffectTarget(e)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.filter(chkc,e) end
	if chk==0 then return true end
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_GRAVE,0,nil,e)
	if #g>=2 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
		local sg=g:Select(tp,2,2,nil)
		Duel.SetTargetCard(sg)
		Duel.SetOperationInfo(0,CATEGORY_TOHAND,sg,2,0,0)
	end
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
	if not g then return end
	g=g:Filter(Card.IsRelateToEffect,nil,e)
	if #g==2 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end