Please answer the following question: Information:  - Tolay Lake is a shallow freshwater lake in southern Sonoma County, California, United States. The lake, nestled within the southern vestiges of the Sonoma Mountains, is the site of significant Native American prehistoric seasonal settlement. In 2005, Sonoma County acquired the entirety of the lake and virtually its whole drainage basin from the Cardoza family for the sum of $18 million; the County's intention is to utilize the property as Tolay Lake Regional Park for ecological and archaeological preservation, as well as public use and enjoyment. Tolay Lake and its immediate drainage area is home to several nesting pairs of golden eagles, "Aquila chrysaetos", and a number of rare, threatened or endangered species including the California red-legged frog, "Rana draytonii"; Western pond turtle, "Actinemys marmorata"; and Western burrowing owl, "Athene cunicularia".  - Europe is a continent that comprises the westernmost part of Eurasia. Europe is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, and the Mediterranean Sea to the south. To the east and southeast, Europe is generally considered as separated from Asia by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways of the Turkish Straits. Yet the non-oceanic borders of Europea concept dating back to classical antiquityare arbitrary. The primarily physiographic term "continent" as applied to Europe also incorporates cultural and political elements whose discontinuities are not always reflected by the continent's current overland boundaries.  - Sears Point is a prominent landform that juts into the San Pablo Bay in Sonoma County , California , USA . This hill is the southernmost peak of the Sonoma Mountains and forms the southwestern ridge above Tolay Lake . Starting with European settlement of this area in the mid- 19th century considerable modification of the Napa Sonoma Marsh began to occur , such that in contemporary times , there is considerable upland between Sears Point and San Pablo Bay . Numerous local conservation organizations are presently working to restore hundreds of acres of these historic tidal wetlands as part of the Sears Point Wetlands and Watershed Restoration Project . The region can be accessed via State Route 37 or State Route 121 . Sears Point was named after Franklin Sears , who settled on 600 acres ( 2.4 km2 ) south of Sonoma in 1851 . Later , he partnered with his father - in - law to purchase some 15,000 acres ( 61 km2 ) , part of which is the present day racetrack , Sonoma Raceway .  - The burrowing owl ("Athene cunicularia") is a small, long-legged owl found throughout open landscapes of North and South America. Burrowing owls can be found in grasslands, rangelands, agricultural areas, deserts, or any other open dry area with low vegetation. They nest and roost in burrows, such as those excavated by prairie dogs ("Cynomys" spp.). Unlike most owls, burrowing owls are often active during the day, although they tend to avoid the midday heat. Like many other kinds of owls, though, burrowing owls do most of their hunting from dusk until dawn, when they can use their night vision and hearing to their advantage. Living in open grasslands as opposed to forests, the burrowing owl has developed longer legs that enable it to sprint, as well as fly, when hunting.  - A continent is one of several very large landmasses on Earth. Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in size to smallest, they are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. In geology, areas of continental crust include regions covered with water.    Given the information above, choose from the list below the object entity that exhibits the relation 'continent' with the subject 'sears point'.  Choices: - north america  - south america
A:
north america