In this task, you will be shown a passage. You need to write a fill-in-the-gap question based on your understanding of the events that might be inferred from the passage. Your question should be answerable based on the passage and only have one correct answer. Show the gap in your question with a _ .

Input: Consider Input: It was no accident that Nasa crashed one of its Apollo 16 rocket boosters onto the moon, but the researchers never intended to lose it. In April of 1972, the booster drifted off and was never seen again, unable to transmit tracking data and reveal its whereabouts because of a malfunction. Now, almost 44 years later, the crash site of the Saturn V stage-three booster has finally been located. The site was identified by Jeff Plescia, a scientist from Johns Hopkins University, and expert in finding objects that have been lost in space. Plescia used high-resolution images produced by the Lunar Reconnaissance Orbiter Camera (LROC) system, according to Science Alert.Stage 3 Saturn V rocket booster disappeared in 1972 Apollo 16 missionThe booster was set to crash onto the moon, and take measurementsMalfunction caused it to become lost, unable to transmit tracking dataJeff Plescia located crash site using the Lunar Reconnaissance Orbiter

Output: Still, Science Alert says _ establish a seismic sensor network on the moon in order to test certain theories.


Input: Consider Input: Rio Ferdinand believes Louis van Gaal's decision to return Wayne Rooney to his favoured attacking role has led to the Manchester United's upturn in performance levels. Writing in his column in The Sun ahead of the Manchester derby on Sunday, Ferdinand, now at Queens Park Rangers, revealed his belief that Rooney playing as a striker is fundamental to United hitting fifth gear. He praised Van Gaal for moving his captain further up the field after a spell in the centre of the pitch at the start of the year but admitted the return to form and fitness of Ander Herrera, Marouane Fellaini and Michael Carrick has also been important.Rio Ferdinand says Manchester United need Wayne Rooney in attackHe believes Rooney's form has been key to their upturn in performancesFerdinand said United's 2-1 win at Anfield shows they are 'on to something'Manchester United vs Manchester United: The expert view of the derbyCLICK HERE for all the latest Manchester United news

Output: Ferdinand also pointed to the return of midfield player Michael Carrick (left) as a help to _.


Input: Consider Input: Pluto is almost ready for its close up. After nine and a half years and three billion miles, the New Horizons spacecraft is about to lift the veil on the icy world. It promises to be the biggest planetary debut in a quarter-century. The curtain hasn't been pulled back like this since the Voyager 2 flew past Neptune in 1989. For principal investigator, Alan Stern, this is the culmination of 15 years of hard work and endless campaigns to launch missions to the dwarf planet. 'The adrenaline is intense at the moment,' Stern told DailyMail.com. '[I'm] literally sleeping four hours a night and feeling great.'New Horizons will make its closest to Pluto at 7:49 a.m. EDT tomorrowPrincipal investigator, Alan Stern, has spent 15 years working on missionPluto has taught us 'that our view of the solar system is wrong', said SternDwarf planet is thought to be a relic left from formation of the solar systemFirst close-up images will be sent back to Earth on Wednesday morning


Output: They also plan to measure the temperature and pressure in _'s nitrogen-rich atmosphere and determine how much gas is escaping into space.