Given the task definition and input, reply with output. In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: How old was King George III when his seventh son was born? Passage 1:Flint reported to the 3rd Fleet for duty at Ulithi on 27 December 1944, and six days later, sailed with Task Force 38 (TF 38) for a month-long cruise in support of the invasion of Luzon. She screened aircraft carriers as they launched strikes on Luzon, Taiwan, and the China coast, and fired protective anti-aircraft cover during a Japanese kamikaze attack on 21 January 1945. Replenishing at Ulithi from 26 January to 10 February, Flint then sailed with newly designated TF 38 for air strikes on Tokyo preceding the attack on Iwo Jima. Her force arrived off Iwo Jima on 21 February to provide anti-aircraft cover for the Marines who had landed two days previously, and Flint returned to Ulithi 12 March for a brief 2 days of replenishment.
 Passage 2:In 1793 George Vancouver named Point Adolphus (at the northern tip of Chichagof Island, and today a well-known humpback whale feeding area) after Adolphus Frederick, seventh son of King George III. In 1878, W.H. Dall, while working on a coastal survey, saw "Adolphus" on the map and assumed it was for Swedish king Gustavus Adolphus. The point across Icy Strait from Point Adolphus at the mouth of Glacier Bay was not named on the map, so Dall called it "Gustavus". Another possibility is that Dall named Gustavus for Gustavus C. Hanus, a U.S. Naval Academy graduate who had extensive experience throughout southeast Alaska, and both Dall and Hanus served with the Coast Survey in Alaska. Hanus laid out the first streets in Juneau and helped quell the trouble in Klukwan in 1881.
 Passage 3:His ancestors were among the First Families of Virginia. His father, Beverley Dandridge Tucker Sr. was an Episcopal priest who had served in the Confederate States Army and as chaplain of a Confederate veterans group as well as small parishes in Virginia's Northern Neck, and later helped establish Colonial Williamsburg and became the second bishop of the Southern Virginia. Two of his brothers became missionaries in China and Japan. His eldest brother Henry St. George Tucker became the second Missionary Bishop of Kyoto, but returned to his home state and became Bishop of the Diocese of Virginia and later Presiding Bishop of the Episcopal Church. His youngest brother Francis Bland Tucker turned down an invitation to become bishop of North Carolina, but distinguished himself as a parish priest in Savannah, Georgia, as a theologian helping to revise the Book of Common Prayer as well as wrote many hymns included in the Hymnal 1982.
2