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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. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
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Washington (CNN) The Navy is looking to increase its use of drones that are more and more independent of direct human control despite the concerns of alarmed scientists and inventors over increasing automation in the military. In recent days, Pentagon officials and Navy leaders have spoken about the program and the push to develop more autonomous and intelligent unmanned systems. Secretary of Defense Ash Carter in a speech earlier this month confirmed that the United States was developing "self-driving boats which can network together to do all kinds of missions, from fleet defense to close-in surveillance, without putting sailors at risk."Navy leaders have spoken about the push to develop more autonomous and intelligent unmanned systemsThe Navy's push comes despite critics expressing increasing alarm at further automating drones 
 Question:_ contract aims to equip hundreds of ships with drones.
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Navy


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Trains crossing snowfields, winding through meadows, passing by mountains, by day and night, through winter and summer. These stunning images are the work of one photographer in his quest to capture the incredible beauty of China's railway lines. Wang Wei, 25, has travelled more than 185,000 miles over the past 10 years and taken more than 300,000 photographs across the country, reported the People's Daily Online. Now, some of the photographs will feature in a new book called Running After Trains, to be published in July. The freelance photographer tells MailOnline his new book will focus on the photography techniques for shooting trains, and he hopes his photos can show the beauty of Chinese railways to more people.Wang Wei, 25, has travelled more than 185,000 miles over past 10 years and taken more than 300,000 photographsHis obsession with trains began aged 11 when he stole his parents' camera and went down to the railway trackHe spends five months travelling every year, and has been everywhere from Gobi desert to the Russian borderSome of the photographs will feature in Wang's new book Running After Trains, due to be published in JulyChina's vast railway network is 75,000 miles long - the second largest in the world behind the United States 
 Question:'The authorities don't promote _ trains and railways often enough, but they are so beautiful and they belong to every one in China,' says Wang.
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China


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(CNN) -- A day after her sister Serena's comeback was ended in Eastbourne, Venus Williams suffered a similar fate losing in the quarterfinals to Daniela Hantuchova. The Slovak battled hard in blustery conditions on the south coast of England as she recorded a 6-2 5-7 6-2 win -- her first over Venus in 11 meetings. Williams had been out of action for five months with an abdominal injury before returning for the warm-up tournament ahead of Wimbledon and showed flashes of her old self in the second set. Hantuchova told the WTA's official web site: "I was not thinking about our other matches at all. I was just focusing on my game today.Daniela Hantuchova knocks Venus Williams out of Eastbourne 6-2 5-7 6-2It is the first time Hantuchova has beaten Williams in 11 matchesSlovak will now face fifth seed Petra Kvitova after she beat Agnieszka RadwanskaMario Bartoli will face Australian Sam Stosur in other semifinal 
 Question:_ then stormed back to take the second set before Hantuchova restored her dominance in the decider, breaking Williams twice and sealing the tie with her first match point.
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Venus Williams


