In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Q: (CNN) Since the discovery of dark streaks on the slopes of Mars in 2011, astronomers have been excited about potential evidence of water beneath the surface of the red planet. If there are subsurface water flows on Mars, they could allow life -- even on a microbial level -- to exist as well. But further study of these recurring slope lineae, known as RSL, is revealing something else. Those dark streaks may be the result of granular flows like sand and dust, according to a study published Monday in the journal Nature Geoscience. The study is the product of a research team made up of representatives from the US Geological Survey, the Planetary Science Institute, the University of Arizona and Durham University in England.The flows correlate more with sand on active dunes rather than subsurface waterResearchers studied flows at 10 sites 
 Questions:Earth is the only analog we have for _, but Mars obviously behaves differently, the researchers said. (A) CNN (B) Mars (C) RSL (D) Nature Geoscience (E) US Geological Survey (F) Planetary Science Institute (G) University of Arizona (H) Durham University (I) England

A: (B)
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Q: He may be known for his party-loving ways, but Prince Harry works tirelessly to help vulnerable children living in extreme poverty at risk of AIDS - and now his services are being recognised. As part of his Sentebale charity, which he set up with Prince Seeiso of Lesotho, the 30-year-old royal built the Mamohato Children’s Centre to support vulnerable children through healthcare and education. And now, Harry's programme will be receiving the 2015 Swarovski Crystal Of Hope Award at the glittering Life Ball event in May. Prince Harry, who set up Sentebale, a charity that provides healthcare and education to vulnerable children in Lesotho, Southern Africa, will be honoured with an award for his servicesAs part of his Sentebale charity Harry built the Mamohato Children's CentreTo be awarded 2015 Swarovski Crystal Of Hope Award at Life BallIs biggest charity event in Europe supporting people with HIV or AIDSPrevious guests include Bill Clinton and Antonio Banderas 
 Questions:'It has been twenty years since he was part of the Life Ball and we are at such an exciting time in our medical fight against _ that his presence is a wonderful reminder of how far we have come.' (A) Harry (B) AIDS (C) Sentebale (D) Seeiso of Lesotho (E) Mamohato Children’s Centre (F) Swarovski Crystal Of Hope Award (G) Life Ball (H) Lesotho (I) Southern Africa (J) Mamohato Children's Centre (K) Europe (L) Bill Clinton (M) Antonio Banderas

A: (B)
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Q: A British couple have been killed in Qatar after a dune buggy they were travelling in overturned. Eamonn Morgan, 24, and his girlfriend Charlotte Sant were visiting some sand dunes in the Middle Eastern country when they crashed on Saturday. Two other friends, who were thought to be visiting the couple from the UK, were in the vehicle but escaped with injuries. It is believed Mr Morgan, from Newry in Norther Ireland had been living in Doha, Qatar, for the last year with Miss Sant, from Manchester. The pair were both working as PE teachers. Mr Morgan, a graduate from John Moores University in Liverpool, was a keen Gaelic football player and had continued the sport even after leaving Ireland.Eamonn Morgan, 24, was killed along with his girlfriend, Charlotte SantDied when their dune buggy flipped over in the Middle Eastern countryTwo friends, who were visiting, were in the vehicle but escaped unharmed 
 Questions:'I also had the pleasure of training _ for the past year, a sweet girl, who took to a new sport with more enthusiasm than you could ever ask for!. (A) British (B) Qatar (C) Eamonn Morgan (D) Charlotte Sant (E) Middle Eastern (F) UK (G) Morgan (H) Newry (I) Norther Ireland (J) Doha (K) Miss Sant (L) Manchester (M) Mr Morgan (N) John Moores University (O) Liverpool (P) Gaelic (Q) Ireland

A:
(D)
****