Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Input: Passage: The Red Rovers, commonly referred to as the Alabama Red Rovers, was a filibuster force organized in Courtland, Alabama to support the Texas Revolution. Raised by doctor and planter Jack Shackelford in November 1835, the unit took its name from the red jeans of their uniforms and was outfitted with equipment from Alabama state arsenal. Consisting of some 70 men, nearly half the men in Courtland, the unit remained encamped until December 12 before setting out for Texas by way of New Orleans. After arriving at Lavaca Bay on January 19, 1836 and being accepted into Texas service on February 3, the Red Rovers were put under command of Colonel James W. Fannin. They fought in the Battle of Coleto on March 1920, performing well, but the Texians were overrun and ultimately forced to surrender
Link Information: Jack Shackelford (March 20, 1790 January 22, 1857) Question: How old was the doctor and planter when raised the Red Rovers?
Output:
Answer: 45