Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: How many seasons did Sarah MacKenzie appear on JAG? Passage:Commander Harmon "Harm" Rabb, Jr. (David James Elliott), a former Naval aviator turned lawyer, is assigned to the Headquarters of the Navy Judge Advocate General alongside fellow Marine Corps lawyer Lieutenant Colonel Sarah "Mac" MacKenzie (Catherine Bell), a squared away officer with a dysfunctional past. This season, Mac waits anxiously for news of Harm, who has been lost at sea ("Adrift"), before requesting an assignment away from JAG ("New Gun in Town"), while Commander Sturgis Turner (Scott Lawrence) joins the team. Also, Harm defends a Major accused of homicide ("Measure of Men") and a Marine is accused of rape ("Guilt"), Mac is awarded the Meritorious Service Medal ("Mixed Messages"), Harm faces disbarment ("Redemption"), and six Marines are killed in an ambush ("Ambush"). Later, the team run a marathon ("Jagathon"), The CAG (Terry O'Quinn) comes out of retirement ("Dog Robber"), and Jennifer Coates (Zoe McLellan) is assigned Harm as legal counsel ("Answered Prayers"), before Harm and Mac go up against Admiral Chegwidden (John M. Jackson) at a military tribunal when prosecuting a top Al-Qaeda terrorist, and Lieutenant Bud Roberts (Patrick Labyorteaux) is injured on a land mine in Afghanistan ("Enemy Below").


b