Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

[Q]: Context: Weathering changes solid rock into sediments. Sediments are different sizes of rock particles. Boulders are sedi- ments; so is gravel. At the other end, silt and clay are also sediments. Weathering causes rocks at the Earths surface to change form. The new minerals that form are stable at the Earths surface. It takes a long time for a rock or mountain to weather. But a road can do so much more quickly. If you live in a part of the world that has cold winters, you may only have to wait one year to see a new road start to weather (Figure Mechanical weathering breaks rock into smaller pieces. These smaller pieces are just like the bigger rock; they are just smaller! The rock has broken without changing its composition. The smaller pieces have the same minerals in the same proportions. You could use the expression a chip off the old block to describe mechanical weathering! The main agents of mechanical weathering are water, ice, and wind. Rocks can break apart into smaller pieces in many ways. Ice wedging is common where water goes above and below its freezing point (Figure 9.2). This can happen in winter in the mid-latitudes or in colder climates in summer. Ice wedging is common in mountainous regions. This is how ice wedging works. When liquid water changes into solid ice, it increases in volume. You see this when you fill an ice cube tray with water and put it in the freezer. The ice cubes go to a higher level in the tray than the water. You also may have seen this if you put a can of soda into the freezer so that it cools down quickly. If you leave the can in the freezer too long, the liquid expands so much that it bends or pops the can. (For the record, water is very unusual. Most substances get smaller when they change from a liquid to a solid.) Abrasion is another type of mechanical weathering. With abrasion, one rock bumps against another rock. Gravity causes abrasion as a rock tumbles down a slope. Moving water causes abrasion it moves rocks so that they bump against one another (Figure 9.3). Strong winds cause abrasion by blasting sand against rock surfaces. Finally, the ice in glaciers cause abrasion. Pieces of rock embedded in ice at the bottom of a glacier scrape against the rock below. If you have ever collected beach glass or pebbles from a stream, you have witnessed the work of abrasion. Sometimes biological elements cause mechanical weathering. This can happen slowly. A plants roots grow into a crack in rock. As the roots grow larger, they wedge open the crack. Burrowing animals can also cause weathering. By digging for food or creating a hole to live in the animal may break apart rock. Today, human beings do a lot of mechanical weathering whenever we dig or blast into rock. This is common when we build homes, roads, and subways, or quarry stone for construction or other uses. Mechanical weathering increases the rate of chemical weathering. As rock breaks into smaller pieces, the surface area of the pieces increases. With more surfaces exposed, there are more places for chemical weathering to occur. Lets say you wanted to make some hot chocolate on a cold day. It would be hard to get a big chunk of chocolate to dissolve in your milk or hot water. Maybe you could make hot chocolate from some smaller pieces like chocolate chips, but it is much easier to add a powder to your milk. This is because the smaller the pieces are, the more surface area they have. Smaller pieces dissolve more easily. Chemical weathering is different than mechanical weathering. The minerals in the rock change. The rock changes composition and becomes a different type of rock. Most minerals form at high pressure or high temperatures deep within Earth. But at Earths surface, temperatures and pressures are much lower. Minerals that were stable deeper in the crust are not stable at the surface. Thats why chemical weathering happens. Minerals that formed at higher temperature and pressure change into minerals that are stable at the surface. Chemical weathering is important. It 
 Question: weathering process that occurs when rocks and rock particles scrape other rocks
[A]: abrasion


[Q]: Context: The police must investigate a series of robberies along a strip of land in the city. The new mayor of the city (Kenneth Mars) assigns Captain Harris (G.W. Bailey) and Lt. Proctor (Lance Kinsey) to the case, but while on stakeout the Wilson gang manages to slip through their fingers.The Mayor wants Harris and Proctor to work with Police Academy head Commandant Lassard (George Gaynes) on apprehending the gang. Lassard assembles a seven-man team consisting of Hightower (Bubba Smith), Tackleberry (David Graf), Jones (Michael Winslow), Hooks (Marion Ramsey), Callahan (Leslie Easterbrook), Fackler (Bruce Mahler), and Lassard's nephew, Nick (Matt McCoy) who transfers from Miami (in the previous film Police Acdemy 5) to the city to remain close to his friends and dull-witted uncle.After distributing flyers as to the information of the Wilson gang and getting nowhere, Nick McCoy stumbles upon a paper heading of an antique diamond heading to a museum, and gets an idea to use it as bait: however the robbers nab the diamond anyway by cutting a hole in the truck and escaping through the sewer system. McCoy then decides to go undercover to get information regarding a possible hideout, but Harris decides to go undercover to get a confession.It turns out that Harris goes undercover as a window washer at a tall building, for which he has a fear of heights, and gets a confession of himself on tape after his loyal but numb-skull lacky, Proctor, accidentally knocks him over the balcony.It is revealed here that the robberies are committed by a group of three dim-witted criminals who do not seem to be able to do this on their own, and it is revealed they are being guided by a literally shadow figure known as the "Mastermind", who speaks to the three behind a wall of glass and uses a voice distortion device. He devises a plan to get the cops out of the way.Commandant Lassard and his men are later suspended after stolen jewellery from the last robbery is planted in Lassard's locker, pending an investigation. The misfit cops decide to clear Lassard's name by nabbing the gang and the ringleader. Accessing data files from a computer, McCoy deduces that the robberies are occurring along a bus route, thus intentionally lowering property values in that part of the city. They also learn that someone must be 'leaking' information to the bad guys, which is why they are always one step ahead of the Police Academy.The Police Academy force finds and does battle with the Wilson gang, while Nick chases the leader. A pursuit follows, which leads to Commissioner Hurst's (George Robertson) office. It is revealed that the Mayor is the "Mastermind" and that Captain Harris has been unwittingly leaking information during his daily meetings with the Mayor. Hurst apologizes and reinstates the force, and a plaque is given to honor the officers' bravery the next day.As the movie closes, Harris is sitting in a chair when a string tying the balloon float is cut, lifting his chair and floating him up into the air as he shouts Proctor's name. 
 Question: who is guiding the group of three dimwitted criminals ?
[A]: mastermind


[Q]: Context: Mosqueiro is an island near the south bank of the Para River in the Brazilian state of Para, roughly north of downtown Belem. 
 Question: What body of water was Mosqueiro next to?
[A]:
pará river