Question: What 2 characteristics do Jolt Cola and Tab Clear share? 
Context: Tab Clear was a variation of Tab.  It is Coca-Cola's contribution to the short-lived "clear cola" movement during the early 1990s.  It was introduced in the United States on December 14, 1992, in the United Kingdom a month later and in Japan in March 1993 to initially positive results.  Tab Clear was, however, discontinued after only a short time of marketing in 1994.  Unlike most other "clear" soft drinks, Tab Clear contained caffeine and, according to the company, had the flavor of cola. Jolly Cola is an original Danish soft drink dating back to 1959.  Jolly Cola is now produced by the Danish brewery ‘Vestfyen’, which also produces Jolly Light, the sports drink Jolly Time and Jolly Orange.  Up until the 1980s, Jolly Cola had a market share of about 40% of the Danish cola market.  This was extraordinary, as Denmark is one of a few countries in the world, where another cola than the original Coca-Cola has had a larger market share. Tab (stylized as TaB) is a diet cola soft drink produced by The Coca-Cola Company, introduced in 1963.  The soda was popular throughout the 1960s and 1970s, and several variations were made, including Tab Clear as well as caffeine-free versions. The Samsung Galaxy Tab 2 7.0 is a 7-inch Android tablet produced and marketed by Samsung Electronics.  Samsung Galaxy Tab 2 is Ice Cream Sandwich sequel.  It belongs to the second generation of the Samsung Galaxy Tab series, which also includes a 10.1-inch model, the Galaxy Tab 2 10.1.  It was announced on 13 February 2012, and launched in the US on 22 April 2012.  It is the successor to the Samsung Galaxy Tab 7.0 Plus. Diet Pepsi and Diet Pepsi Classic Formula Blend (stylized as diet PEPSI CLASSIC SWEETENER BLEND) are no-calorie carbonated cola soft drinks produced by PepsiCo, introduced in 1964 as a variant of Pepsi-Cola with no sugar.  First test marketed in 1963 under the name Patio Diet Cola, it was re-branded as "Diet Pepsi" the following year, becoming the first diet cola to be distributed on a national scale in the United States.  In the 1960s and 1970s its competition consisted of Tab, produced by The Coca-Cola Company, and Diet Rite soda, produced by Royal Crown.  Diet Coke was a later entrant to the diet cola market; though shortly after entering production in 1982 it became the primary competing diet cola to Diet Pepsi. Tab Energy is marketed as a low calorie energy drink named after Tab, Coca-Cola's original low-calorie cola brand.  While it shares the Tab name, it is not a cola product like the original Tab. " Fashion Week Daily" describes it as a “sweet and sour beverage” with a taste “reminiscent of a liquid Jolly Rancher”.  It is sweetened with sucralose (rather than saccharin), is pale pink, and lightly carbonated. Jolt Cola was a carbonated soft drink produced by The Jolt Company, Inc. (later known as Wet Planet Beverages).  The cola drink was created in 1985 by C. J. Rapp as a highly caffeinated beverage.  It was targeted towards students and young professionals, stressing its use as a stimulant in a similar manner as energy drinks. Its slogan reads "All the sugar, twice the caffeine!" C.J. Rapp is an American beverage inventor best known for inventing and marketing high-caffeine Jolt Cola. Wet Planet Beverages, of Pittsford, New York is the company which produces Jolt Cola, Napa Valley Soda, Thornwood Estates, Autumn Frost, and DNA.  They are also a distributor for Martinelli's Sparkling Cider. Samsung WatchON, first introduced on Galaxy S4 devices, was a service that allowed users to view programming information on their TV or set-top box, and choose programs directly from their mobile devices.  Samsung WatchON also provides real-time programming and VOD content recommendations based on the user's viewing patterns; it also includes a virtual remote controller which uses the built-in IR Blaster of the device to control televisions, home theater systems, and media players of any brand, provided they are IR compatible.  Samsung WatchON is available on the Galaxy S4, Galaxy S4 Mini, Galaxy S5, Galaxy S5 Mini, Galaxy Note 3, Galaxy Note 3 Neo, Galaxy Note 4, Galaxy Note Edge, Galaxy Alpha, Galaxy Note 8.0, Galaxy Note 10.1, Galaxy Note 10.1 2014 Edition, Galaxy Note Pro 12.2, Galaxy Tab 2 7.0, Galaxy Tab 2 10.1, Galaxy Tab 3 7.0, Galaxy Tab 3 8.0, Galaxy Tab 3 10.1, Galaxy Tab 4 7.0, Galaxy Tab 4 8.0, Galaxy Tab 4 10.1, Galaxy Tab Pro 8.4, Galaxy Tab Pro 10.1, Galaxy Tab Pro 12.2, Galaxy Tab S 8.4, Galaxy Tab S 10.5, and Gear 2 devices.
Answer: contained caffeine