Question: In which Nevada county on the north shore of Lake Tahoe did commodities trader Edward Arthur Seykota live? 
Context: Hard Rock Lake Tahoe (formerly Sahara Tahoe, High Sierra, Horizon Lake Tahoe and Park Tahoe) is a hotel and casino located in Stateline, Nevada.  Also previously known as Sahara Tahoe and High Sierra resorts, it is one of four major casino hotels in Stateline.  Horizon Lake Tahoe closed on April 1, 2014, to begin a $60 million renovation and rebranding as Hard Rock Lake Tahoe, which held its grand opening on January 28, 2015. The Lake Tahoe Basin Management Unit is a United States national forest that manages and protects public land surrounding Lake Tahoe and the Lake Tahoe Basin.  Straddling the state borders of California and Nevada in the Sierra Nevada, the LTBMU encompasses approximately 150,000 acres (607 km²) of National Forest system lands, ranging in altitude above sea level from 6,225 feet at lake level to 10,881 feet at Freel Peak.  The U.S. Forest Service established the LTBMU in 1973.  The name of the Lake Tahoe Basin Management Unit reflects a unique sort of National Forest, as unique as the resources of the Tahoe Basin. Edward Arthur Seykota (born August 7, 1946) is a commodities trader, who earned S.B. degrees in Electrical Engineering from MIT and Management from the MIT Sloan School of Management, both in 1969.  In 1970 he pioneered Systems trading by using early punched card computers to test ideas on trading the markets.  Seykota resided in Incline Village, Nevada, on the north shore of Lake Tahoe, but recently moved to Texas. The Tahoe Rim Trail is a 165-mile (266 km) long-distance hiking trail that forms a loop around the Lake Tahoe Basin in the Sierra Nevada and Carson ranges of California and Nevada in the United States.  The trail ranges in elevation from 6,240 feet (1,900 m) at the outlet of Lake Tahoe to 10,338 feet (3,151 m) at Relay Peak in Nevada.  About 50 miles (80 km) of trail above the lake's west shore are also part of the much longer Pacific Crest Trail.  Additionally, 96 Miles of the trail along the east and south sides of the Lake Tahoe basin are designated as a National Recreation Trail. Emerald Bay State Park is a state park of California in the United States, centered on Lake Tahoe's Emerald Bay, a National Natural Landmark.  Park features include Eagle Falls and Vikingsholm, a 38-room mansion that is considered one of the finest examples of Scandinavian architecture in the United States.  The architect was Leonard Palme, who was hired by his aunt Laura Knight to design and build Vikingsholm.  The park contains the only island in Lake Tahoe, Fannette Island.  The park is accessible by California State Route 89 near the southwest shore of the lake.  Emerald Bay is one of Lake Tahoe's most photographed and popular locations. SS "Tahoe" was a steamship that operated on Lake Tahoe at the end of the 19th century and first half of the 20th.  Scuttled in 1940, the wreck presently lies in 400 ft of water off Glenbrook, Nevada.  The wreck was first visited in 2002 by a team from New Millennium Dive Expeditions (NMDE) in a record-setting high-altitude dive for Lake Tahoe.  As a result of the work that NMDE did on the "Tahoe" site from 1999 up to their dives in 2002, "Tahoe" became the first maritime site in Nevada to be listed in the National Register of Historic Places. Homewood is an unincorporated community in Placer County, California of about 200 residents, located on the west shore of Lake Tahoe.  It is located 5.5 mi south of Tahoe City and north of Chambers Landing and Tahoma.  It is the location of Homewood Mountain Resort.  The community of Tahoe Pines uses Homewood's ZIP Code, 96141.  Thomas McConnell is said to be the founder of Homewood, after he purchased lakefront property on Lake Tahoe's west shore and laid out the Homewood District with property on either side of Highway 89 in 1889.  The Homewood Post Office was later established in 1909. Sierra-at-Tahoe is a ski and snowboard resort in Twin Bridges, California south of Lake Tahoe.  Sierra-at-Tahoe is approximately 16 miles (26 km) south of Stateline, Nevada and 12 miles south of South Lake Tahoe on U.S. Route 50 and is contained within the Eldorado National Forest.  Sierra-at-Tahoe (often shortened to "Sierra") is a medium sized ski area in the Lake Tahoe region, and is well known for being a more family oriented resort and also having a high annual snowfall.  Sierra-at-Tahoe's terrain is 25 percent beginner, 50 percent Intermediate, and 25 percent advanced. State Route 267 (SR 267), known as North Shore Boulevard, is a California state highway near Lake Tahoe, United States.  It connects Interstate 80 in Truckee to the Northstar at Tahoe ski resort and Kings Beach on Lake Tahoe, and serves as an alternate route to Route 89 for connecting between Interstate 80 and Route 28 on Lake Tahoe's shoreline at the Nevada border. Incline Village is a census-designated place (CDP) in Washoe County, Nevada on the north shore of Lake Tahoe.  The population was 8,777 at the 2010 census.  It is part of the Reno−Sparks Metropolitan Statistical Area.  Until the 2010 census, the CDP Crystal Bay, Nevada was counted jointly with Incline Village.
Answer: Washoe County