Question: Bates Island is located in a lake with a surface area of how many acres?
Sentence (from "Lake Mistassini"): Lake Mistassini (in French: "Lac Mistassini") is the largest natural lake by surface area in the province of Quebec, Canada, with a total surface area of approximately 2,335 km² and a net area (water surface area only) of 2,164 km².
Relevant evidence: No