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 long had Chief Leschi been a leader for the year the Washington Volunteers were overtaken by the Nisqually tribe? Passage:Major Granville O. Haller of the 4th Infantry led an expedition from Fort Dalles into central Washington, and Lieutenant William A. Slaughter also of the 4th Infantry with forty-eight men from Fort Steilacoom crossed Natchez Pass to aid Major Haller when attempts to move the Indians of Puget Sound onto reservations caused trouble between them and some white settlers. Captain Maloney of the 4th Infantry, and Captain Gilmore Hayes of the Washington Volunteers had started for Yakima via Natchez Pass when they were overtaken on 29 October 1855 by the Nisqually tribe under Chief Leschi. Lt. Slaughter and his men plus Captain Hayes' force met the Indians at the crossing of the White River, and on 4 November 1855 fought without decisive results. The following day the troops met hostiles in the difficult country between the White and Green Rivers. The troops fell back into the valleys and on 24 November 1855, Lt. Slaughter, commanding a platoon of the 4th Infantry and a company of volunteers, was attacked in his camp at Puyallup. The lieutenant moved to the present site of Auburn and here again the Indians attacked. Slaughter and two corporals of the volunteer company were killed, four other men were injured, one later dying of his wounds. For years the town, which sprang up on this site, was known as Slaughter in honor of this officer of the 4th Infantry; it was later changed to Auburn.


b