romikgosai/squad_modified_2 huggingface dataset:
Phase-two mode can only be activated by a key switch located inside the elevator on the centralized control panel. This mode was created for firefighters so that they may rescue people from a burning building. The phase-two key switch located on the COP has three positions: off, on, and hold. By turning phase two on, the firefighter enables the car to move. However, like independent-service mode, the car will not respond to a car call unless the firefighter manually pushes and holds the door close button. Once the elevator gets to the desired floor it will not open its doors unless the firefighter holds the door open button. This is in case the floor is burning and the firefighter can feel the heat and knows not to open the door. The firefighter must hold door open until the door is completely opened. If for any reason the firefighter wishes to leave the elevator, they will use the hold position on the key switch to make sure the elevator remains at that floor. If the firefighter wishes to return to the recall floor, they simply turn the key off and close the doors.

Q1: How is the Phase-two mode enabled?
A1: Phase-two mode can only be activated by a key switch located inside the elevator on the centralized control panel
Q2: What actions must a firefighter take to activate Phase-two mode?
A2: manually pushes and holds the door close button
Q3: What does Phase-two do?
A3: enables the car to move
Q4: What is the purpose of the Phase-two mode?
A4: This mode was created for firefighters so that they may rescue people from a burning building
Q5: Where is the Phase-two key switch to be found?
A5: on the COP
Once the elevator arrives at the floor, it will park with its doors open and the car buttons will be disabled to prevent a passenger from taking control of the elevator. Medical personnel must then activate the code-blue key switch inside the car, select their floor and close the doors with the door close button. The elevator will then travel non-stop to the selected floor, and will remain in code-blue service until switched off in the car. Some hospital elevators will feature a 'hold' position on the code-blue key switch (similar to fire service) which allows the elevator to remain at a floor locked out of service until code blue is deactivated.

Q1: Upon arriving at the desinated floor, what does the elevator do?
A1: it will park with its doors open and the car buttons will be disabled to prevent a passenger from taking control of the elevator
Q2: What steps do medical personnel take at that point?
A2: Medical personnel must then activate the code-blue key switch inside the car, select their floor and close the doors with the door close button
Q3: Where then does the elevator go?
A3: The elevator will then travel non-stop to the selected floor
Q4: Once it arrives what does the elevator do
A4: will remain in code-blue service until switched off in the car
Q5: What does the hold feature do?
A5: allows the elevator to remain at a floor locked out of service until code blue is deactivated
When power is lost in a traction elevator system, all elevators will initially come to a halt. One by one, each car in the group will return to the lobby floor, open its doors and shut down. People in the remaining elevators may see an indicator light or hear a voice announcement informing them that the elevator will return to the lobby shortly. Once all cars have successfully returned, the system will then automatically select one or more cars to be used for normal operations and these cars will return to service. The car(s) selected to run under emergency power can be manually overridden by a key or strip switch in the lobby. In order to help prevent entrapment, when the system detects that it is running low on power, it will bring the running cars to the lobby or nearest floor, open the doors and shut down.

Q1: What sequence of events happens when the power shuts off in a traction elevator and the elevators all stop?
A1: One by one, each car in the group will return to the lobby floor, open its doors and shut down
Q2: What do any passengers experience at this point?
A2: People in the remaining elevators may see an indicator light or hear a voice announcement informing them that the elevator will return to the lobby shortly
Q3: After all cars go to the lobby, what is the next step?
A3: the system will then automatically select one or more cars to be used for normal operations and these cars will return to service
Q4: How are the selected cars then readied for passengers?
A4: The car(s) selected to run under emergency power can be manually overridden by a key or strip switch in the lobby
Q5: What is a safety feature to prevent entrapment?
A5: when the system detects that it is running low on power, it will bring the running cars to the lobby or nearest floor, open the doors and shut down
In hydraulic elevator systems, emergency power will lower the elevators to the lowest landing and open the doors to allow passengers to exit. The doors then close after an adjustable time period and the car remains unusable until reset, usually by cycling the elevator main power switch. Typically, due to the high current draw when starting the pump motor, hydraulic elevators are not run using standard emergency power systems. Buildings like hospitals and nursing homes usually size their emergency generators to accommodate this draw. However, the increasing use of current-limiting motor starters, commonly known as "soft-start" contactors, avoid much of this problem, and the current draw of the pump motor is less of a limiting concern.

Q1: How do hydraulic elevators work in emergencies?
A1: emergency power will lower the elevators to the lowest landing and open the doors to allow passengers to exit
Q2: Once the passengers have exited, what happens?
A2: The doors then close after an adjustable time period and the car remains unusable until reset, usually by cycling the elevator main power switch
Q3: For what reason are hydraulic elevators not powered by the standard emergency system?
A3: due to the high current draw when starting the pump motor
Q4: What are current-limiting motor starters referred to as?
A4: "soft-start" contactors
Past problems with hydraulic elevators include underground electrolytic destruction of the cylinder and bulkhead, pipe failures, and control failures. Single bulkhead cylinders, typically built prior to a 1972 ASME A17.1 Elevator Safety Code change requiring a second dished bulkhead, were subject to possible catastrophic failure. The code previously permitted only single-bottom hydraulic cylinders. In the event of a cylinder breach, the fluid loss results in uncontrolled down movement of the elevator. This creates two significant hazards: being subject to an impact at the bottom when the elevator stops suddenly and being in the entrance for a potential shear if the rider is partly in the elevator. Because it is impossible to verify the system at all times, the code requires periodic testing of the pressure capability. Another solution to protect against a cylinder blowout is to install a plunger gripping device. One commercially available is known by the marketing name "LifeJacket". This is a device which, in the event of an uncontrolled downward acceleration, nondestructively grips the plunger and stops the car. A device known as an overspeed or rupture valve is attached to the hydraulic inlet/outlet of the cylinder and is adjusted for a maximum flow rate. If a pipe or hose were to break (rupture), the flow rate of the rupture valve will surpass a set limit and mechanically stop the outlet flow of hydraulic fluid, thus stopping the plunger and the car in the down direction.

Q1: Underground electrolytic malfunctions in hydraulic elevators can result in the destruction of what?
A1: the cylinder and bulkhead
Q2: What Elevator Safety Code change required a second dished bulkhead?
A2: 1972 ASME A17.1
Q3: Before the code change was enacted what was the only permitted hydraulic cylinder type?
A3: single-bottom
Q4: Once the cylinder is breached, what calamity does the loss of fluid cause?
A4: uncontrolled down movement of the elevator
Q5: What testing does the code require?
A5: periodic testing of the pressure capability
Safety testing of mine shaft elevator rails is routinely undertaken. The method involves destructive testing of a segment of the cable. The ends of the segment are frayed, then set in conical zinc molds. Each end of the segment is then secured in a large, hydraulic stretching machine. The segment is then placed under increasing load to the point of failure. Data about elasticity, load, and other factors is compiled and a report is produced. The report is then analyzed to determine whether or not the entire rail is safe to use.

Q1: What part of the mine shaft requires routine testing?
A1: elevator rails
Q2: What is  the first step in destructive testing?
A2: The ends of the segment are frayed, then set in conical zinc molds
Q3: Afterwards, what type of machine is the segment secured in?
A3: hydraulic stretching machine
Q4: What type of testing is done to the an area of the cable?
A4: destructive testing
Q5: What types of information are collected in the process?
A5: Data about elasticity, load, and other factors is compiled
Passenger elevators capacity is related to the available floor space. Generally passenger elevators are available in capacities from 500 to 2,700 kg (1,000–6,000 lb) in 230 kg (500 lb) increments.[citation needed] Generally passenger elevators in buildings of eight floors or fewer are hydraulic or electric, which can reach speeds up to 1 m/s (200 ft/min) hydraulic and up to 152 m/min (500 ft/min) electric. In buildings up to ten floors, electric and gearless elevators are likely to have speeds up to 3 m/s (500 ft/min), and above ten floors speeds range 3 to 10 m/s (500–2,000 ft/min).[citation needed]

Q1: What dictates passenger elevator capacities?
A1: the available floor space
Q2: What capacities are passenger elevators availablee in?
A2: from 500 to 2,700 kg (1,000–6,000 lb) in 230 kg (500 lb) increments
Q3: What types of passenger elevators are installed in structures of up to eight floors?
A3: hydraulic or electric
Q4: Hydraulic elevators can reach speeds up to 1m/s or how many feet per minute?
A4: 200
Q5: Electric elevators can reach speeds up to 3 m/s or how many feet per minute?
A5: 500
Sometimes passenger elevators are used as a city transport along with funiculars. For example, there is a 3-station underground public elevator in Yalta, Ukraine, which takes passengers from the top of a hill above the Black Sea on which hotels are perched, to a tunnel located on the beach below. At Casco Viejo station in the Bilbao Metro, the elevator that provides access to the station from a hilltop neighborhood doubles as city transportation: the station's ticket barriers are set up in such a way that passengers can pay to reach the elevator from the entrance in the lower city, or vice versa. See also the Elevators for urban transport section.

Q1: Passenger elevators, used in city transport share similarities to what other ascending and descending vehicles counterbalancing each other?
A1: funiculars
Q2: What type of public elevator in Yalta, Ukraine, transport passengers from a hill above the Black Sea to a tunnel down on the beach?
A2: underground public elevator
Q3: The elevator located at the Casco Viejo station in the Bilbao Metro is also used for what?
A3: city transportation
Q4: How is that set up?
A4: ticket barriers are set up in such a way that passengers can pay to reach the elevator from the entrance in the lower city, or vice versa
A freight elevator, or goods lift, is an elevator designed to carry goods, rather than passengers. Freight elevators are generally required to display a written notice in the car that the use by passengers is prohibited (though not necessarily illegal), though certain freight elevators allow dual use through the use of an inconspicuous riser. In order for an elevator to be legal to carry passengers in some jurisdictions it must have a solid inner door. Freight elevators are typically larger and capable of carrying heavier loads than a passenger elevator, generally from 2,300 to 4,500 kg. Freight elevators may have manually operated doors, and often have rugged interior finishes to prevent damage while loading and unloading. Although hydraulic freight elevators exist, electric elevators are more energy efficient for the work of freight lifting.[citation needed]

Q1: What is another name for a freight elevator?
A1: goods lift
Q2: What type of notice is required to be visible in most freight elevators?
A2: a written notice in the car that the use by passengers is prohibited
Q3: Some freight elevators allow transport of both freight and passengers by using what?
A3: an inconspicuous riser
Q4: How do freight elevators differ from passenger elevators?
A4: Freight elevators are typically larger and capable of carrying heavier loads than a passenger elevator
Q5: What type of elevator is better suited for carrying freight?
A5: electric elevators
Stage lifts and orchestra lifts are specialized elevators, typically powered by hydraulics, that are used to raise and lower entire sections of a theater stage. For example, Radio City Music Hall has four such elevators: an orchestra lift that covers a large area of the stage, and three smaller lifts near the rear of the stage. In this case, the orchestra lift is powerful enough to raise an entire orchestra, or an entire cast of performers (including live elephants) up to stage level from below. There's a barrel on the background of the image of the left which can be used as a scale to represent the size of the mechanism

Q1: How are stage lifts powered?
A1: by hydraulics
Q2: How many hydraulic elevators are there at Radio City Music Hall?
A2: four
Q3: What is an orchestra lift used for?
A3: to raise an entire orchestra, or an entire cast of performers (including live elephants) up to stage level from below
Q4: What is on the background of the image which can be used as a scale to represent the size of the mechanism?
A4: a barrel
A residential elevator is often permitted to be of lower cost and complexity than full commercial elevators. They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators. Construction may be less robust than in commercial designs with shorter maintenance periods, but safety systems such as locks on shaft access doors, fall arrestors, and emergency phones must still be present in the event of malfunction.

Q1: What type of elevators are generally less costly than full commercial elevators?
A1: residential
Q2: What type of doors do commercial elevators use?
A2: metal sliding
Q3: What safety mechanisms are still required, despite lower design costs?
A3: locks on shaft access doors, fall arrestors, and emergency phones
Q4: What type of elevator has a hinged wooden shaft-access door?
A4: residential
Some types of residential elevators do not use a traditional elevator shaft, machine room, and elevator hoistway. This allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation. The ASME board first approved machine-room-less systems in a revision of the ASME A17.1 in 2007. Machine-room-less elevators have been available commercially since the mid 1990s, however cost and overall size prevented their adoption to the residential elevator market until around 2010.

Q1: What types of elevators occassionaly do not use a traditional elevator shaft, machine room or hoistway?
A1: residential
Q2: In what year were Machine-room-less elevators first allowed?
A2: 2007
Q3: This decision reflected a revision of what?
A3: the ASME A17.1
Q4: What benefits does this serve?
A4: allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation
Dumbwaiters are small freight elevators that are intended to carry food, books or other small freight loads rather than passengers. They often connect kitchens to rooms on other floors. they usually do not have the same safety features found in passenger elevators, like various ropes for redundancy. they have a lower capacity, and they can be up to 1 meter (3 ft.) tall. there's a control panel at every stop, that mimics the ones found in passenger elevators, like calling, door control, floor selection.

Q1: What are small freight elevators used for things such as food, called?
A1: Dumbwaiters
Q2: What rooms are dumbwaiters frequently used in?
A2: They often connect kitchens to rooms on other floors
Q3: What is a safety feature found in passenger elevators they generally do not have?
A3: various ropes for redundancy
Q4: What is the height restriction on dumbwaiters?
A4: they can be up to 1 meter (3 ft.) tall
Q5: What features do they have that mimic passenger elevators?
A5: calling, door control, floor selection
Material transport elevators generally consist of an inclined plane on which a conveyor belt runs. The conveyor often includes partitions to ensure that the material moves forward. These elevators are often used in industrial and agricultural applications. When such mechanisms (or spiral screws or pneumatic transport) are used to elevate grain for storage in large vertical silos, the entire structure is called a grain elevator. Belt elevators are often used in docks for loading loose materials such as coal, iron ore and grain into the holds of bulk carriers

Q1: What do the partians do on the conveyor?
A1: ensure that the material moves forward
Q2: An inclined plane with a conveyor belt describes what type of elevator?
A2: Material transport elevators
Q3: What industries are these types of elevators generally used in?
A3: industrial and agricultural applications
Q4: What are spiral screws used for?
A4: to elevate grain for storage in large vertical silos
Q5: What type of elevators are used for loading loose materials into bulk carriers?
A5: Belt elevators
Elevators necessitated new social protocols. When Nicholas II of Russia visited the Hotel Adlon in Berlin, his courtiers panicked about who would enter the elevator first, and who would press the buttons. In Lifted: A Cultural History of the Elevator, author Andreas Bernard documents other social impacts caused by the modern elevator, including thriller movies about stuck elevators, casual encounters and sexual tension on elevators, the reduction of personal space, and concerns about personal hygiene.

Q1: The invention of elevators brought with it questions of social etiquette and formalities, generally referred to as what?
A1: social protocols
Q2: The last tsar of Russia, Nicholas ll encountered his first elevator at the Hotel Adloin in what city?
A2: Berlin
Q3: This caused a stir in deciding who should enter first and who should do what?
A3: press the buttons
Q4: Andreas Bernard wrote about the social aspects of the new elevators in what book?
A4: Lifted: A Cultural History of the Elevator
In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a rotating needle, but the most common types are those with successively illuminated floor indications or LCDs. Likewise, a change of floors or an arrival at a floor is indicated by a sound, depending on the elevator.

Q1: Modern elevator position or floor indicaters often use what type of bulbs?
A1: LED
Q2: What type of lanterns are used outside elevators as well as inside most cabs?
A2: direction lanterns
Q3: What do floor indicaters often consist of?
A3: successively illuminated floor indications or LCDs
Q4: What generally indicates the arrival of the elevator at a new floor?
A4: a sound
Direction lanterns are also found both inside and outside elevator cars, but they should always be visible from outside because their primary purpose is to help people decide whether or not to get on the elevator. If somebody waiting for the elevator wants to go up, but a car comes first that indicates that it is going down, then the person may decide not to get on the elevator. If the person waits, then one will still stop going up. Direction indicators are sometimes etched with arrows or shaped like arrows and/or use the convention that one that lights up red means "down" and green means "up". Since the color convention is often undermined or overridden by systems that do not invoke it, it is usually used only in conjunction with other differentiating factors. An example of a place whose elevators use only the color convention to differentiate between directions is the Museum of Contemporary Art in Chicago, where a single circle can be made to light up green for "up" and red for "down". Sometimes directions must be inferred by the position of the indicators relative to one another.

Q1: What is the main function of direction lanterns?
A1: to help people decide whether or not to get on the elevator
Q2: What might change your mind about whether or not to enter an elevator?
A2: If somebody waiting for the elevator wants to go up, but a car comes first that indicates that it is going down
Q3: What type of etching might you see on a direction indicator?
A3: arrows or shaped like arrows
Q4: Some elevators may use the color convention for only what purpose?
A4: to differentiate between directions
There are several technologies aimed to provide better experience to passengers suffering from claustrophobia, anthropophobia or social anxiety. Israeli startup DigiGage uses motion sensors to scroll the pre-rendered images, building and floor-specific content on a screen embedded into the wall as the cab moves up and down. British company LiftEye provides a virtual window technology to turn common elevator into panoramic. It creates 3d video panorama using live feed from cameras placed vertically along the facade and synchronizes it with cab movement. The video is projected on a wall-sized screens making it look like the walls are made of glass.

Q1: New technologies aim to provide a better elevator experience to passengers who suffer from what?
A1: claustrophobia, anthropophobia or social anxiety
Q2: What Israeli company uses motion sensors to display information on a screen embedded in the wall of the cabs?
A2: DigiGage
Q3: LiftEye uses virtual window technology for what?
A3: to turn common elevator into panoramic
Q4: How does it produce the panoramic effects?
A4: It creates 3d video panorama using live feed from cameras placed vertically along the facade and synchronizes it with cab movement
Q5: Where is the video projected?
A5: on a wall-sized screens
In most US and Canadian jurisdictions, passenger elevators are required to conform to the American Society of Mechanical Engineers' Standard A17.1, Safety Code for Elevators and Escalators. As of 2006, all states except Kansas, Mississippi, North Dakota, and South Dakota have adopted some version of ASME codes, though not necessarily the most recent. In Canada the document is the CAN/CSA B44 Safety Standard, which was harmonized with the US version in the 2000 edition.[citation needed] In addition, passenger elevators may be required to conform to the requirements of A17.3 for existing elevators where referenced by the local jurisdiction. Passenger elevators are tested using the ASME A17.2 Standard. The frequency of these tests is mandated by the local jurisdiction, which may be a town, city, state or provincial standard.

Q1: In what neighboring countries are passenger elevators required to adhere to Standard A17.1?
A1: most US and Canadian jurisdictions
Q2: What is the equivilent to the US Standard A17.1 called in Canada?
A2: CAN/CSA B44 Safety Standard
Q3:  What is Standard A17.1?
A3: Safety Code for Elevators and Escalators
Q4: What are passenger elevators tested with?
A4: ASME A17.2 Standard