instruction:
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.
question:
What kind of weapon can shoot down a fully loaded passenger jet flying at nearly 33,000 feet? That could be a key question in the Malaysia Airlines Flight 17 crash investigation, as officials try to determine what was responsible for Thursday's plane crash in volatile eastern Ukraine. A radar system saw a surface-to-air missile system turn on and track an aircraft right before the plane went down, a senior U.S. official told CNN's Barbara Starr. And a second system saw a heat signature at the time the airliner was hit. The United States is analyzing the trajectory of the missile to pinpoint where the attack came from, the official said.Senior U.S. official: Radar saw surface-to-air missile system track aircraftA sophisticated surface-to-air missile was more likely used, experts sayOne possibility is the Russian-made Buk missile system, retired Army officer saysThe sophisticated weapon would require professional soldiers, expert says 
 Questions:Such weapons travel with _ troops at the division level, Francona said. (A) Malaysia Airlines (B) Ukraine (C) U.S. (D) CNN (E) Barbara Starr (F) United States (G) Russian (H) Buk missile system (I) Army
answer:
(G)


question:
Washington (CNN) President Donald Trump spent months running against Barack Obama's leadership style, faulting him for being "weak and ineffective" on Iran, lacking of focus the "real" job numbers and inability to combat ISIS because he was the group's "founder." What a difference a few months makes. Trump and his White House advisers are now using Obama as a security blanket, making almost identical moves he made during his tenure and defending possible mistakes by arguing that they were initially made by Barack Obama. The tactic is familiar: Obama, eight years after he succeeded President George W. Bush, was still blaming the 43rd president for some of the pockmarks on his legacy.Trump's White House has pointed fingers at the Obama administration planning for the Yemen raidBut takes credit for jobs figures achieved under Obama's watch 
 Questions:And Obama officials -- many of whom left their offices weeks ago -- were left to laugh at how _ is taking credit for the jobs numbers. (A) Washington (B) CNN (C) Donald Trump (D) Barack Obama (E) Iran (F) ISIS (G) White House (H) Obama (I) George W. Bush (J) Yemen
answer:
(C)


question:
(CNN) Pregnant women should not travel to Barbados, Bolivia, Ecuador, Guadeloupe, Saint Martin, Guyana, Cape Verde and Samoa because of Zika virus, the CDC said Friday. This comes on the heels of last week's travel alert from the CDC recommending pregnant women postpone travel to Brazil, Colombia, El Salvador, French Guiana, Guatemala, Haiti, Honduras, Martinique, Mexico, Panama, Paraguay, Suriname, Venezuela and Puerto Rico. The recommendations also call for women who have traveled to these places during their pregnancy be screened and monitored for the virus if their visit took place while the virus was present in the country they visited.CDC expands list of nations pregnant women should avoidEl Salvador, Jamaica and Colombia tell women not to get pregnantCDC says Zika virus has been transmitted by blood transfusion, in the lab and sexually 
 Questions:The decision is based on their ongoing monitoring of the Zika virus around the world and _ say they will update as necessary in the interest of public health. (A) Barbados (B) Bolivia (C) Ecuador (D) Guadeloupe (E) Saint Martin (F) Guyana (G) Cape Verde (H) Samoa (I) Zika (J) CDC (K) Brazil (L) Colombia (M) El Salvador (N) French Guiana (O) Guatemala (P) Haiti (Q) Honduras (R) Martinique (S) Mexico (T) Panama (U) Paraguay (V) Suriname (W) Venezuela (X) Puerto Rico (Y) Jamaica
answer:

(J)