In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

[Q]: Passage: The Lookout Mountain Incline Railway is a inclined plane funicular railway leading to the top of Lookout Mountain from the historic St. Elmo neighborhood of Chattanooga, Tennessee. Passengers are transported from St. Elmo's Station at the base, to Point Park at the mountain summit, which overlooks the city and the Tennessee River. It is just a short drive to three of Chattanooga's main tourist attractions, Ruby Falls, Cavern Castle, and Rock City. The railway is approximately in length (single-track except for a short two-track passing loop at the midway point, allowing operation of two cars at one time). It has a maximum grade of 72.7%, making it one of the world's steepest passenger railways. It obtained Historic Mechanical Engineering Landmark status in 1991. The cable system for the cars was made by the Otis Elevator Company.
Link Information: The company pioneered the development of the "safety elevator", invented by Otis in 1852, which used a special mechanism to lock the elevator car in place should the hoisting ropes fail.
Question: In what year did the Otis Elevator Company first use the cable system for their railway cars?
[A]: Answer: 1852

[Q]: Passage: Linda was introduced as the wife of Mick Carter, played by Danny Dyer, the brother of established character Shirley Carter (Linda Henry), who has appeared in EastEnders since 2006. Luisa Bradshaw-White joined the cast as Shirley's sister Tina Carter in early November, and Linda was the second new Carter to appear after her. Kellie Bright's casting was announced alongside Danny Dyer's on 1 October 2013, a week after Bradshaw-White's casting was revealed. Linda was described as having been with Mick since they were teenagers, and despite not being 'blessed with brains', is a 'tough woman who will always fight tooth and nail for her family - especially her children'. Bright previously appeared as a bridesmaid in 1986 at the wedding of Michelle Fowler (Susan Tully) and Lofty Holloway (Tom Watt), and starred in scenes opposite her current co-star Letitia Dean, who continues to appear as Sharon Watts. Bright estimated herself to be aged 10 at the time. She also auditioned for the role of Tanya Branning in 2006, a role that was eventually given to Jo Joyner.
Link Information: Susan Tully (born 20 October 1967) Question: Of the characters who married in 1986, which of their actors was younger?
[A]: Answer: Susan Tully

[Q]: Passage: While working at the National Institute of Health, Lisziewicz worked to find a gene therapy approach to treat HIV/AIDS. She based her research on discovering if small portions of gene-stopping DNA (called antisense oligonucleotides) could be created to bind up the viral RNA in retroviruses like HIV so that the virus could not make more copies of itself to continue the infection. Small pieces of messenger RNA (or mRNA) carry a copy of the cell's DNA to the ribosomes where the mRNA directs the ribosomes to create the proteins that the cells need. Viruses (like HIV) have their own set of mRNA, and they use the ribosomes of the cell they infected to make new viruses to propagate the infection throughout the body. Lisziewicz's idea was to create antisense oligonucleotides that are complementary to the HIV's viral mRNA. These complementary DNA pieces can bind to the HIV viral mRNA and prevent the HIV virus from replicating itself. The use of antisense oligonucleotides worked very well in cell cultures, and was quickly transferred to clinical trials.
Link Information: none Question: What year was the first case of HIV/AIDS reported?
[A]:
Answer: none