Question: The Penetanguishene Bay Purchase, registered as Crown Treaty Number Five, was signed May 22, 1798 , it purchased the lands around Matchedash Bay on Lake Huron, one of the five Great Lakes, of which continent?
Sentence (from "Great Lakes"): The total surface is 94250 sqmi , and the total volume (measured at the low water datum) is 5439 cumi .
Relevant evidence: No