Question: what was the birth year of the representative of Nevada Senate District 18 whose district included a community that lies at the edge of the Spring Mountains and Red Rock Canyon? 

Context articles: Spring Mountains National Recreation Area
Red Rock River (Montana)
High Rock Canyon Wilderness
Summerlin, Nevada
The Lakes, Las Vegas
Spring Mountains
Last Chance Canyon
Mount Wilson (Nevada)
Mark Manendo
Scott Hammond (politician)

The Spring Mountains National Recreation Area (SMNRA) is a U.S. National Recreation Area, administered by the U.S. Forest Service, and lies west of Las Vegas, Nevada.
 It covers over 316,000 acres (1,279 km) of land.
 The area runs from low meadows at around 3,000 feet (900 m) of elevation to Mount Charleston at 11,918 feet (3633 m) in elevation.
 The SMNRA is a part of the Humboldt-Toiyabe National Forest.
 It adjoins the Red Rock Canyon National Conservation Area, which is administered by the Bureau of Land Management.
The Red Rock River is a roughly 70 mi river in southwestern Montana in the United States.
 Its drainage basin covers over 1548 mi2 .
 Its furthest tributary, Hell Roaring Creek, originates in the Beaverhead National Forest within a few hundred meters of the North American Continental Divide and Montana-Idaho border near Brower's Spring, at an elevation of about 9100 ft .
 Brower's Spring is near the furthest headwaters of the Missouri River, one of the major watercourses of the central United States.
 The drainage flows north and west with its name changing to "Red Rock Creek" into the Red Rock Lakes in the middle of a wide grassy valley; the Red Rock River issues from the west side of Lower Red Rock Lake.
 It flows west, receiving many tributaries such as Peet Creek and Long Creek, widening into the Lima Reservoir and then passing through a canyon, which ends near Lima, Montana.
 From there, it flows northwest through a valley, passing Kidd and Red Rock, and into Clark Canyon Reservoir.
 Under the waters of the lake was once the confluence of the Red Rock and Horse Prairie Creek, forming the Beaverhead River, a tributary of the Jefferson River, in turn a headwater of the Missouri River.
The High Rock Canyon Wilderness is a U S Wilderness Area in Nevada under the Bureau of Land Management.
 It is located on the southwest side of High Rock Canyon and north of the Little High Rock Canyon Wilderness.
 It does not include the 4x4 trail in High Rock Canyon.
Summerlin is an affluent planned community in the Las Vegas Valley of Nevada.
 It lies at the edge of the Spring Mountains and Red Rock Canyon, on the western periphery of Las Vegas, Nevada in unincorporated Clark County.
 The community occupies 22,500 acres and includes a variety of land uses, including: residential, commercial, recreational, educational, medical, open space, and cultural.
 At the 2010 census, Summerlin's population was nearly 100,000, having risen from 59,000 in 2000.
The Lakes is an affluent 2 sqmi planned community located within the city limits of Las Vegas, Nevada.
 It is located in the western part of the Las Vegas Valley near the Spring Mountains and Red Rock Canyon National Conservation Area.
 The centerpiece of the community, and its namesake, is a large man-made lake, Lake Sahara.
 It was originally planned to have two man-made lakes but was downscoped to one.
 It was built from the mid-1980s to the mid-1990s, and at the time was at the edge of development in the valley.
 It consists of a mixture of gated communities consisting of large single-family homes, condominia, commercial areas and offices.
The Spring Mountains are a mountain range of southern Nevada in the United States, running generally northwest-southeast along the west side of Las Vegas and south to the border with California.
 Most land in the mountains is owned by the United States Forest Service and the Bureau of Land Management and managed as the Spring Mountains National Recreation Area within the Humboldt-Toiyabe National Forest and the Red Rock Canyon National Conservation Area.
Last Chance Canyon is a canyon in the El Paso Mountains near Johannesburg, California.
 The canyon runs from Saltdale in the south to Black Mountain in the north; part of it lies within Red Rock Canyon State Park.
 The canyon includes a variety of archaeological sites, including pictographs, villages, rock shelters, mills, and quarries.
 Historic sites such as gold mining camps are also located in the canyon.
Mount Wilson is a mountain located in the Spring Mountain range of southern Nevada.
 It is located on land managed by the United States Bureau of Land Management as the Red Rock Canyon National Conservation Area, part of the Rainbow Mountain Wilderness Area.
 It is the highest peak in the Red Rock Canyon National Conservation Area.
Mark Manendo (born October 2, 1966) was a Democratic member of the Nevada Senate, representing District 21.
 Manendo was elected as half of a dual-member district in 2010 in Clark No. 7 but in 2011 redistricting split the dual member district and renumbered his constituency to District 21.
 On July 18th, 2017, Sen. Manendo resigned after the competition of an investigation into allegations of sexual harassment found “Senator Manendo violated the Legislature’s anti-harassment policy; had engaged in multiple and repeated instances of inappropriate, offensive, and unacceptable behavior towards female staffers and lobbyists; and had attempted to interfere with the subsequent investigation into his conduct.”
 .
 The areas Senator Manendo represented were portions of Clark County which included areas of Las Vegas, Sunrise Manor, Whitney, Lake Las Vegas, part of Lake Mead National Recreation Area, and the Clark County Wetlands Park.
 He formerly served in the Nevada Assembly, representing Clark County District 18 from 1994 to 2010.
Scott Hammond (born 1966 in Syracuse, New York) is an American politician.
 He was elected to the Nevada State Senate in 2012 to represent Senate District 18 which encompasses the northwest part of the Las Vegas Valley including portions of the communities of Summerlin, Centennial Hills, Tule Springs and Lone Mountain.
 He defeated Kelli Ross, wife of Las Vegas City Councilman Steve Ross, by 1471 votes.