Instructions: 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 southwest location of the river has fewer people living there? Passage:Poxte is a river and valley of the Maya Mountains in Guatemala. The valley is noted for numerous Maya sites such as Ixtutz and the Peten Caves. The river is located on the southwest of the Dolores plateau and northwest of Poptun, in the Guatemalan department of Peten. The source of the river is on the same plateau, near the villages of Boca del Monte and Santo Domingo. The river flows westwards through the hamlet of Poxte, it then disappears amongst the karst topography and resumes its course to the west. It continues westwards into the San Juan River, which is a tributary of the Machaquila River. The Machaquila River feeds into the Pasion River, which flows into the Usumacinta River and into the Gulf of Mexico. The upper reaches of the Poxte River shares its drainage with the Mopan River, which flows eastwards into the Caribbean Sea.

Output:
b