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: Just 90 miles away, Cuba inevitably shares a long history with the United States, from conquistadors to the Spanish-American War to the Cold War. Here are some of the top moments in that history, even before the countries came into being. Old World meets New World Christopher Columbus lands on Cuba in 1492 and claims the island for Spain, leading the way for that country's conquistadors to explore the Caribbean and the part of the U.S. Southeast that's now Florida, among other parts of the Americas. Spanish-American War The United States helps Cuba win independence from Spain in a war between the European country and the Americans in 1898. In one of the more famous moments, Theodore Roosevelt and his Rough Riders charge up Cuba's Kettle Hill during the Battle of Santiago, and the so-called 1st Volunteer Cavalry become instant heroes.The United States helped Cuba win independence from Spain in 1898The new Republic of Cuba allows the U.S. naval base in Guantanamo in 1903U.S. comes to brink of nuclear war with Cuba and Soviet Union in 1962A custody battle over Elian Gonzalez becomes an international incident in 1999 
 Questions:The U.S. occupation of Cuba lasts until 1902, during which _ forces modernize the capital's infrastructure. (A) Cuba (B) United States (C) Spanish-American War (D) Cold War (E) Old World (F) New World (G) Christopher Columbus (H) Spain (I) Caribbean (J) U.S. Southeast (K) Florida (L) Americas (M) European (N) Theodore Roosevelt (O) Rough Riders (P) Kettle Hill (Q) Battle of Santiago (R) Volunteer Cavalry (S) Republic of Cuba (T) Guantanamo (U) Soviet Union (V) Elian Gonzalez

A: (B)
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Q: (CNN) The estimated 22,000 attendees of the Rotary International Convention were quick to their feet Monday morning in Atlanta. Inspiration for the many standing ovations came not only from the encouraging words of Atlanta Mayor Kasim Reed, professional wrestling star John Cena, Rotary President John Germ and famed Microsoft founder Bill Gates. It was also the sight of observers in wheelchairs lining the middle rows of the Georgia World Congress Center auditorium that moved the crowd to rise from their seats again and again. The Rotarians, wearing glowing LED bracelets, came to Atlanta to commit once again to the elusive goal they first outlined in 1985: a world free of polio, the highly infectious disease that invades the nervous system and can cause total paralysis in a matter of hours. The disease can be prevented by a safe vaccine, which can protect a child for life when given multiple times.In 1985, polio paralyzed more than 350,000 children in 125 countries every yearLast year, just 40 cases were reported worldwide 
 Questions:Though he praised the _' hard-won achievements, he also addressed the hard question on the minds of most attendees. (A) Rotary International Convention (B) Atlanta (C) Kasim Reed (D) John Cena (E) Rotary (F) John Germ (G) Microsoft (H) Bill Gates (I) Georgia World Congress Center (J) LED

A: (E)
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Q: A man who bludgeoned a businessman to death while high on crack is to be executed today. Gregory Russeau beat car-repair shop owner James Syvertson to death in 2001, leaving his bloody body to be found by his family. He denied being responsible for the murder, alleging that police planted one of his hairs at the crime scene. However, a Texas jury found him guilty and he was sentenced to death. His execution will be the ninth performed by the state in 2015, with four more planned before the end of the year. Unless any last-minute appeals are successful, he will be put to death sometime after 6pm central time - shortly after midnight in the UK - with a lethal dose of pentobarbital.Gregory Russeau will be executed tonight for businessman's murderDenied crime but found guilty and sentenced to death by lethal injectionHe will become ninth prisoner in Texas to be executed this yearVictim's family say they have 'mixed emotions' about killer's sentence 
 Questions:_ is on track to carry out more lethal injections than it did last year. (A) Gregory Russeau (B) James Syvertson (C) Texas (D) UK

A:
(C)
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