The exact number of speakers in Greece is difficult to ascertain, with estimates ranging between 20,000 and 250,000. Jacques Bacid estimates in his 1983 book that "over 200,000 Macedonian speakers remained in Greece". Other sources put the numbers of speakers at 180,000 220,000 and 250,000, whereas Yugoslav sources vary, some putting the estimated number of "Macedonians in Greek Macedonia" at 150,000–200,000 and others at 300,000. The Encyclopædia Britannica and the Readers Digest World Guide both put the figure of ethnic Macedonians in Greece at 1.8% or c.200,000 people, with the native language roughly corresponding with the figures. The UCLA also states that there are 200,000 Macedonian speakers in Greece. A 2008 article in the Greek newspaper Eleftherotypia put the estimate at 20,000.

Which source estimated the lowest number of speakers?
A: Eleftherotypia

The site of the current bridge is among several sites of a slave rebellion called the Stono Rebellion, one of the earliest known organized acts against slavery in the Americas.  On September 9, 1739, twenty black slaves raided a store near the bridge; in the process they killed two storekeepers and took guns and gunpowder. The bridge survived an attempt by Union forces to burn it during the American Civil War. Union troops floated burning rafts down to the Stono Bridge, hoping the wooden structure would catch fire and burn. However, their efforts were thwarted by a Lieutenant Smith, who along with members of a naval battalion, brought the rafts to shore. There have been several bridges in this location; the last variation was a two lane bridge 1,416 feet -long, which was built in 1928, and later refurbished in 1950. This swing-span drawbridge used a 156-foot -long steel-truss which left little room for even small vessels to pass beneath unless it was open.

How many more slaves raided the store than storekeepers were killed?
A: 18

In 1991, the KFC name was officially adopted, although it was already widely known by that initialism. Kyle Craig, president of KFC US, admitted the change was an attempt to distance the chain from the unhealthy connotations of "fried". The early 1990s saw a number of successful major products launched throughout the chain, including spicy "Hot Wings" (launched in 1990), popcorn chicken (1992), and internationally, the "Zinger", a spicy chicken fillet burger (1993). By 1994, KFC had 5,149 outlets in the US, and 9,407 overall, with over 100,000 employees. In August 1997, PepsiCo spun off its restaurants division as a public company valued at US$4.5 billion (around US$6.5 billion in 2013). The new company was named Tricon Global Restaurants, and at the time had 30,000 outlets and annual sales of US$10 billion (around US$14 billion in 2013), making it second in the world only to McDonalds. Tricon was renamed Yum! Brands in May 2002.

How many more billion in annual sales did Tricon Global Restaurants have in annual sales in 2013 compared to 1997?
A:
4