Question: What ingredient can be found in both a Bee's Knees and Between the Sheets cocktail?
Context: Timothy H. Heaton, Ph.D., is a professor of earth sciences at The University of South Dakota (USD), Vermillion, specializing in archaeological geology.  Having grown up near the Grand Canyon, much of Dr. Heaton’s work is focused on the Great Basin as well as on forming chronologies for the extinction of many Ice Age animals; He discovered a new species of fossil skunk (Brachyprotoma) at Crystal Ball Cave, Utah.  Dr. Heaton has also devoted much of his time evaluating the scientific merits of young-Earth creationist geology and the application of biblical evidence to understanding the earth’s prehistory.  He is most widely known for his work at On Your Knees Cave located in Prince of Wales Island in southeast Alaska where early humans remains ca. 10,300 years old were found.  This find is one of the oldest human genetic samples recovered in the Americas.  The site record further supports the possibility the first people into the Americas south of the ice sheets traveled along the Alaskan coast by boat rather than overland through central Canada. The Between the Sheets is a cocktail consisting of white rum, cognac, triple sec, and lemon juice. "On My Knees" is the debut single by the British R&B group the 411, released on 5 May 2004 and featured on their first album, "Between the Sheets".  In the UK Singles Chart, it reached number four and spent a total of ten weeks in the UK Top 75.  It features guest vocals by American rapper Ghostface Killah, who includes "On My Knees" on his album. Xylocopa micans, also known as the southern carpenter bee, is a species of bee within "Xylocopa", the genus of carpenter bees.  The southern carpenter bee can be found mainly in the coastal and gulf regions of the southeastern United States, as well as Mexico and Guatemala.  Like all "Xylocopa" bees, "X. micans" bees excavate nests in woody plant material.  However, unlike its sympatric species "Xylocopa virginica", "X. micans" has not been found to construct nest galleries in structural timbers of building, making it less of an economic nuisance to humans.  Carpenter bees have a wide range of mating strategies between different species.  The southern carpenter bee exhibits a polymorphic mating strategy, with its preferred method of mating changing as the season progresses from early spring to mid summer.  Like most bees in its genus, the southern carpenter bee is considered a solitary bee because it does not live in colonies. Bee Gees Gold was a compilation album, released in America and Japan only (was also released in the UK), that focused on the early hits of the Bee Gees.  Labeled as "Volume 1", it featured their U.S. Top 20 hits between 1967 and 1972 (plus "I Can't See Nobody", an album cut from "Bee Gees 1st").  The album was intended to replace the two previous hits compilations, "Best of Bee Gees" and "Best of Bee Gees, Volume 2".  It reached #50 on "Billboard"<nowiki>'</nowiki>s album chart during a time when the Bee Gees were topping the charts with their new R&B/Disco sound found on their then current album "Children of the World".  "Gold" went gold in America in January 1978 and has sold 1.3 million copies to date.  A kind of second volume was released as "Bee Gees Greatest" in 1980 which summed up the disco years from 1975-1979. The American Trilogy cocktail is a variation of the classic Old Fashioned.  Barmen Richard Boccato and Michael McIlroy, created the American Trilogy in 2007 while bartending together at New York’s Little Branch.  This Old Fashioned-style cocktail follows the same bitters, sugar, whiskey and orange peel profile as the classic, but uses orange bitters, a brown sugar cube and one part Applejack and one part rye whiskey to change it up.  As the name implies, each ingredient of this three-part cocktail represents one pillar of the Trilogy.  Laird’s Bonded Applejack Brandy is the first and oldest distilled spirit in America with American rye whiskey following soon after in the late 1700s.  The third pillar of this cocktail is somewhat of a mystery according to creator Richard Boccato, but is often thought to be the orange bitters because of its American Origins. The Dodge Ram Rumble Bee was a truck inspired by the Dodge Super Bee muscle cars of past years.  It bears the bumble bee stripe that is similar to the one that can be found on the old Dodge Super Bee, Charger, and Challenger.  Fewer of the latter, but some different versions of the Ram were given aftermarket Rumble Bee modifications by the consumer or dealerships.  This was a limited edition run, and was only made available in 2004 and 2005 (Second Swarm).  The Dodge Ram Rumble Bee was only offered in a regular cab/short-box 'SLT' version, available with either two or four-wheel drive setup. A Bees Knees (or Bee's Knees) is a Prohibition Era cocktail made with Gin, fresh lemon juice, and honey.  It is served shaken and chilled, often with a lemon twist. Apis cerana, or the eastern honey bee (and the Asiatic honey bee), is a species of honey bee found in southern and southeastern Asia, including China, Pakistan, India, Korea, Japan, Malaysia, Nepal, Bangladesh, Papua New Guinea, Solomon Islands and Australia.  This species is the sister species of "Apis koschevnikovi", and both are in the same subgenus as the western (European) honey bee, "Apis mellifera".  "A. cerana" is known to live sympatrically along with "Apis koschevnikovi" within the same geographic location.  "Apis cerana" colonies are known for building nests consisting of multiple combs in cavities containing a small entrance, presumably for defense against invasion by individuals of another nest.  The diet of this honey bee species consists mostly of pollen and nectar, or honey.  Moreover, "Apis cerana" is known for its highly social behavior, reflective of its classification as a type of honey bee. Between the Sheets is the debut studio album by British girl group the 411.  It was released in late 2004 and was supported by three successful singles, including "On My Knees" featuring Ghostface Killah, "Dumb" and "Teardrops".
Answer: lemon juice