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.
Q: Question: Which range that can be seen from the stone observation tower built in 1912 is the biggest? Passage:Just south of the village center is Mount Prospect, summer home to Senator John W. Weeks, who sponsored congressional legislation creating White Mountain National Forest. In 1910, he purchased several farms to assemble the estate. It is now Weeks State Park, which features a fire lookout and his mansion, open for tours during the summer. A ski rope tow operates on the slope in winter. Many of the White Mountains and Green Mountains can be seen from the stone observation tower built in 1912 atop the summit. The Presidential Range is to the southeast, with the Franconia Range to the south. Mount Weeks, elevation , is in the Kilkenny Range to the northeast. It is named for the senator, as is the Weeks Medical Center. Weeks Memorial Library, a Beaux Arts landmark listed on the National Register of Historic Places in 2000, was given by John W. Weeks in memory of his father, William Dennis Weeks.

A:
b