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:
Researchers have discovered four extinct underwater volcanoes thousands of feet below the water off the coast of Sydney The calderas are believed to have formed 50 million years ago when supercontinent Gondwana was splitting up into the regions we now know as Australia and New Zealand. And this quartet of 'hotheads' may offer geologists clues about how exactly this tectonic movement took place. The volcanoes were discovered 125 miles (200km) off the southwestern Australian coast using the Investigator ocean explorer from the Commonwealth Scientific and Industrial Research Organisation (CSIRO). Scientists from the University of New South Wales Australia were searching for nursery grounds for larval lobsters when the sonar images spotted the volcanoes 16,100 feet (4,900 metres) underwater.Four volcanoes found in a cluster 125 miles (200km) off coast of SydneyResearchers found the ancient underwater formation by accidentCluster is 12 miles (20km) long, 4 miles (6km wide) and rises 230ft (700m)Experts believe they tell 'part of the story' of how Australia and New Zealand separated between 40 and 80 million years ago 
 Questions:'The ship is constantly mapping the sea floor as it travels, opening up a previously undiscovered and unknown world,' explained _. (A) Sydney (B) Gondwana (C) Australia (D) New Zealand (E) Australian (F) Commonwealth Scientific and Industrial Research Organisation (G) University of New South Wales (H) Four (I) Cluster
answer:
(F)


question:
Paris (CNN) A 9-year-old South African child diagnosed with HIV when he was 1 month old has been in HIV remission for 8½ years -- without regular treatment. This is the first reported case of a child controlling their HIV infection without drugs in Africa and the third known case globally. Soon after diagnosis, the child was placed on antiretroviral treatment, or ART, for 40 weeks, at which point treatment was stopped and the child's health was monitored. Blood tests in late 2015 revealed the child is in HIV remission, meaning levels of the virus in the blood are undetectable using standard tests. Subsequent testing of samples dating back to the child's infancy confirm remission was achieved soon after treatment was stopped.The 9-year-old has been in HIV remission for most of his lifeUnderstanding his biology may one day help other children come off HIV treatment 
 Questions:We could develop a product given to people in combination with _ so people can eventually stop ART, said Violari. (A) Paris (B) CNN (C) South African (D) HIV (E) Africa (F) ART
answer:
(F)


question:
(CNN) Thousands of protesters clashed Saturday for a fifth consecutive day with security forces in Caracas, the Venezuelan capital. Officers in riot gear blocked a highway as marchers tried to advance, chanting "Liberty, Liberty!" Protesters tossed rocks and returned tear gas canisters used against them. The Venezuelan National Guard also used water tanks against the demonstrators as thousands of them marched from eastern Caracas, an opposition bastion, toward downtown, where most national government facilities are located. Protesters are demanding the dismissal of all seven justices of the Venezuelan Supreme Court. The court issued a ruling March 29 that outraged the government's political opposition. It ruled that all powers vested under the legislative body, the Venezuelan National Assembly, be transferred to the court itself, which is stacked with government loyalists.Protesters want Supreme Court members replacedVenezuela has been hit hard by economic woes 
 Questions:_ is facing a deep humanitarian crisis sparked by an economic meltdown. (A) Caracas (B) Venezuelan (C) Liberty, Liberty! (D) Supreme Court
answer:

(B)