You will be given a definition of a task first, then some input of the task.
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: What year was Richard Burt's grandfather born? Passage 1:In April 1603, Martin Pring used the Haven as his departure point for his exploratory voyage to Virginia. The land comprising the site of Milford, the Manor of Hubberston and Pill, was acquired by the Barlow family following the dissolution of the monasteries in the mid-16th century. It acquired an additional strategic importance in the 17th century as a Royalist military base. Charles I ordered a fort to be built at Pill by Royalist forces and completed in 1643 to prevent Parliamentarian forces from landing at Pembroke Castle and to protect Royalist forces landing from Ireland. On 23 February 1644, a Parliamentarian force led by Rowland Laugharne crossed the Haven and landed at Pill. The fort was gunned from both land and water, and a garrison was placed in Steynton church to prevent a Royalist attack from the garrison at Haverfordwest. The fort was eventually surrendered, and quickly taken, along with St Thomas a Becket chapel. Just five years later in 1649 Milford Haven was again the site of Parliamentarian interest when it was chosen as the disembarkation site for Oliver Cromwell's Invasion of Ireland. Cromwell arrived in the Haven on 4 August, meeting George Monck, before Cromwell and over a hundred crafts left for Dublin on 15 August.
 Passage 2:Burt was born in Perth to Gladys (née MacMurtrie) and Frederick Julius Augustus Burt. His grandfather was Septimus Burt, who was also a member of parliament and served as Attorney-General of Western Australia. Burt attended Guildford Grammar School, and after leaving school went to the North-West, working variously as a crayfisherman, stationhand, pearler, and tin miner. He opened a machinery and hardware store in Cue in 1935, and in 1939 was elected to the Cue Road Board, of which he eventually became chairman. Burt entered parliament at the 1959 state election, narrowly winning the seat of Murchison from Everard O'Brien of the Labor Party. He transferred to the new seat of Murchison-Eyre at the 1968 election, and retired from parliament at the 1971 election. After leaving politics, Burt held directorships with various mining companies. He died in Perth in November 1993, aged 84, and had married Mary Groom in 1937, with whom he had three sons.
 Passage 3:Bucks County, an area sympathetic to the Doan Outlaws with a large loyalist population, grew out of William Penn's "holy experiment", and was guided more by Quaker "inner light" than by the traditional "rights of Englishmen". As a result of Penn's effort to create a "nation of nations," almost half of colonial Pennsylvania was non-English. In nearby Philadelphia, the elite Proper Philadelphians were rich, charming, tolerant, but had relinquished the role of governing the city. Philadelphia, by common agreement, was the largest, most cosmopolitan but also the most poorly governed city in the Colonies. Bucks County, when compared to Massachusetts in support for a war with England, was still "The Peaceable Kingdom". No doubt Pennsylvanians were outraged by the actions of the Crown, but they were more likely to express their discontent through resolutions than violent protests. Many Pennsylvanians remained skeptical about cutting ties with England right up to the signing of the Declaration of Independence. To illustrate this, the fighting in "Penn's Woods" started seven years after the Boston Massacre. As for the non-English Pennsylvanian, King George III, even at his worst, was better than what they had known in their homeland. Fat Pennsylvania's legendary prosperity helped ease discord. Bucks County could boast rich farmland, a canal to the sheltered port of Philadelphia, large supplies of fresh water, timber, iron, fire clay, game, and their famous fieldstone for building. The common New Englander by contrast had to choose between hard-scrabble farming or dangerous fishing off rock-ribbed coasts.

Output:
2