This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Q: The first major model for communication was introduced by Claude Shannon and Warren Weaver for Bell Laboratories in 1949 The original model was designed to mirror the functioning of radio and telephone technologies. Their initial model consisted of three primary parts: sender, channel, and receiver. The sender was the part of a telephone a person spoke into, the channel was the telephone itself, and the receiver was the part of the phone where one could hear the other person. Shannon and Weaver also recognized that often there is static that interferes with one listening to a telephone conversation, which they deemed noise.

A: Who introduced the first major model for communication in 1949?
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Q: Occupancy sensors to allow operation for whenever someone is within the area being scanned can control lighting. When motion can no longer be detected, the lights shut off. Passive infrared sensors react to changes in heat, such as the pattern created by a moving person. The control must have an unobstructed view of the building area being scanned. Doors, partitions, stairways, etc. will block motion detection and reduce its effectiveness. The best applications for passive infrared occupancy sensors are open spaces with a clear view of the area being scanned. Ultrasonic sensors transmit sound above the range of human hearing and monitor the time it takes for the sound waves to return. A break in the pattern caused by any motion in the area triggers the control. Ultrasonic sensors can see around obstructions and are best for areas with cabinets and shelving, restrooms, and open areas requiring 360-degree coverage. Some occupancy sensors utilize both passive infrared and ultrasonic technology, but are usually more expensive. They can be used to control one lamp, one fixture or many fixtures.

A: What sensor controls light with motion sensors?
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Q: Prince Hall Freemasonry exists because of the refusal of early American lodges to admit African-Americans. In 1775, an African-American named Prince Hall, along with fourteen other African-Americans, was initiated into a British military lodge with a warrant from the Grand Lodge of Ireland, having failed to obtain admission from the other lodges in Boston. When the military Lodge left North America, those fifteen men were given the authority to meet as a Lodge, but not to initiate Masons. In 1784, these individuals obtained a Warrant from the Premier Grand Lodge of England (GLE) and formed African Lodge, Number 459. When the UGLE was formed in 1813, all U.S.-based Lodges were stricken from their rolls due largely to the War of 1812. Thus, separated from both UGLE and any concordantly recognised U.S. Grand Lodge, African Lodge re-titled itself as the African Lodge, Number 1 and became a de facto "Grand Lodge" (this Lodge is not to be confused with the various Grand Lodges on the Continent of Africa). As with the rest of U.S. Freemasonry, Prince Hall Freemasonry soon grew and organised on a Grand Lodge system for each state.

A:
Why was Prince Hall Freemasonry formed?
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