Q: Per capita income is often used to measure an area's average income. This is used to see the wealth of the population with those of others. Per capita income is often used to measure a country's standard of living. It is usually expressed in terms of a commonly used international currency such as the euro or United States dollar, and is useful because it is widely known, is easily calculable from readily available gross domestic product (GDP) and population estimates, and produces a useful statistic for comparison of wealth between sovereign territories. This helps to ascertain a country's development status. It is one of the three measures for calculating the Human Development Index of a country.
Can we conclude that is per capita income a true index of economic development?
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A: yes
Heteropaternal superfecundation is common in animals such as cats and dogs. Stray dogs can produce litters in which every puppy has a different sire. Though rare in humans, cases have been documented. In one study on humans, the frequency was 2.4% among dizygotic twins whose parents had been involved in paternity suits.
can you have twins and have two different fathers?
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+++++
Answer: yes
The Alpaca (Vicugna pacos) is a species of South American camelid, similar to, and often confused with the llama. However, alpacas are often noticeably smaller than llamas. The two animals are closely related, and can successfully cross-breed. Alpacas and llamas are also closely related to the Vicuna, which is believed to be the alpaca's wild ancestor, and to the Guanaco. There are two breeds of Alpaca: the Suri alpaca (es) and the Huacaya alpaca.

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can you breed an alpaca with a llama?

A: yes
Problem: Text: Frank Williams (born 2 July 1931) is an English actor best known for playing Timothy Farthing, the vicar in the BBC comedy Dad's Army. He and Ian Lavender are the last surviving major cast members. He reprised the role of Farthing in the 2016 film adaptation of the series.

Question: are any of the dad's army cast still alive?

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A: yes
IN: Is it true that is doctor sleep a sequel to the shining?

Doctor Sleep is a 2013 horror novel by American writer Stephen King and the sequel to his 1977 novel The Shining. King stated that it is ''a return to balls-to-the-wall, keep-the-lights-on horror''. The book reached the first position on The New York Times Best Seller list for print and ebook fiction (combined), hardcover fiction, and ebook fiction. Doctor Sleep won the 2013 Bram Stoker Award for Best Novel.

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OUT: yes
Question: By law, former presidents are entitled to a pension, staff and office expenses, medical care or health insurance, and Secret Service protection. do presidents get paid after they leave office

OPTIONS:
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- yes

Answer:
yes