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.

Twitter has named interim Chief Executive Jack Dorsey as its permanent CEO. Dorsey has served as interim CEO for the past three months, after former Dick Costolo stepped down in July. Dorsey will remain the head of fast-growing mobile payments company Square, potentially setting up a conflict of interests for the co-founder of both companies. Twitter previously said the CEO job would be a full-time position, which seemed to exclude Dorsey as long as he continued to run Square. Dorsey is also CEO of mobile payment service Square, a job he has repeatedly said he intends to keep as he prepares to take that San Francisco company public too.Dick Costolo stepped down from role at the beginning of JulyRumours had circulated that interim CEO would be made permanentDorsey will also remain CEO of payment firm SquareTwitter previously said the job would be a full-time position, which seemed to exclude Dorsey as long as he continued to run Square 
 Questions:_ had been Twitter's CEO for five years and led the company through a successful stock market debut in 2013. (A) Twitter (B) Jack Dorsey (C) Dorsey (D) Dick Costolo (E) Square (F) San Francisco
(D)

(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
(E)

(CNN) A pair of veteran leaders on the left, former Democratic National Committee Chairman Howard Dean and Center for American Progress President Neera Tanden, called on Hawaiians to vote Rep. Tulsi Gabbard out of office after the Democrat questioned whether Syrian President Bashar al-Assad was responsible for last week's chemical attack. "People of Hawaii's 2nd District -- was it not enough for you that your rep met with a murderous dictator? Will this move you?" Tanden tweeted Friday in response to Gabbard's comments on CNN that she is "skeptical" Assad is responsible for the chemical attack. Dean compared Gabbard's comments to President Donald Trump's Twitter blasts.'Why should we just blindly follow this escalation of a counterproductive regime-change war?' Gabbard askedA handful of mavericks in Congress have said they want to see more evidence of Assad's involvement 
 Questions:Gabbard has also said she is concerned about sparking a nuclear war with Russia, which backs the _ regime. (A) Democratic National Committee (B) Howard Dean (C) Center for American Progress (D) Neera Tanden (E) Hawaiians (F) Tulsi Gabbard (G) Democrat (H) Syrian (I) Bashar al (J) Assad (K) Hawaii (L) 2nd District (M) Tanden (N) Gabbard (O) CNN (P) Dean (Q) Donald Trump (R) Twitter (S) Congress

(J)