IX. Warlito, a natural-born Filipino, took up permanent residence in the United States, and eventually acquired American citizenship. He then married Shirley, an American, and sired three children. In August 2009, Warlito decided to visit the Philippines with his wife and children: Johnny, 23 years of age; Warlito, Jr., 20; and Luisa, 17. While in the Philippines, a friend informed him that he could reacquire Philippine citizenship without necessarily losing U.S. nationality. Thus, he took the oath of allegiance required under R.A. 9225. Having reacquired Philippine citizenship, is Warlito a natural-born or a naturalized Filipino citizen today? Explain your answer. (3%) With Warlito having regained Philippine citizenship, will Shirley also become a Filipino citizen? If so, why? If not, what would be the most speedy procedure for Shirley to acquire Philippine citizenship? Explain. (3%) Do the children --- Johnny, Warlito Jr., and Luisa --- become Filipino citizens with their father's reacquisition of Philippine citizenship? Explain your answer. (3%)