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: Which parties were involved in the war that Maitland volunteered for with the Imperial Yeomanry? Passage:The elder son of the 13th Earl of Lauderdale, by his first wife, Charlotte Sleigh, a daughter of Lieutenant-Colonel Sleigh of the 77th Foot, Maitland was commissioned into the Royal Scots Fusiliers in 1886, transferred to the 2nd Dragoons in 1887 and to the Scots Guards in 1894, from which he retired as a lieutenant. After the outbreak of the Second Boer War in late 1899, he volunteered for active service with the Imperial Yeomanry in South Africa and was appointed adjutant of the 20th battalion on 21 March 1900. He served in South Africa 1900–1901, when he was mentioned in despatches. After his return, he was Assistant Director of Auxiliary Forces on the Headquarters Staff from 1904 to 1908. He saw further active service in the European War of 1914–1918, in which he was wounded. He was appointed OBE in 1919 and succeeded his father in 1924, taking up residence at Thirlestane Castle near Lauder in Scotland.


b