instruction:
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'.
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Passage: Population densities of mistletoebirds recorded around Australia vary from 0 to 2 birds per hectare with a mean of 0.35 birds per hectare (in areas unaffected by agriculture), where the largest concentration was found in the Kakadu National Park, Northern Territory. The longevity of a mistletoebird has been recorded in southern Queensland where a banded adult male was recaptured near the banding site after 9 years. Mistletoebirds vocally mimic other birds. Heard in all seasons and given by both sexes, they have been recorded mimicking the mulga parrot ( Psephotus varius) as well as more than 25 different species of passerines. Predators known to have taken mistletoebird nestlings are the grey shrike-thrush (Colluricincla harmonica), pied butcherbird (Cracticus nigrogularis), pied currawong (Strepera graculina) and the Australian raven (Corvus coronoides). Nests have also been parasitized by a number of cuckoo species including the horsfield bronze cuckoo (Chrysococcyx basalis) and the fan-tailed cuckoo (Cuculus pyrrhophanus).
 Link Information:  It covers an area of 19804 km2, extending nearly 200 kilometres from north to south and over 100 kilometres from east to west.  Question: What is the size of the park where the largest concentration of Mistletoebirds can be found?
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Answer: 19804 km2


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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?
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Answer: Susan Tully


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Passage: Anthony 'Tony' David Owen is an economist and academic, currently employed as Emeritus Professor in Energy Economics at University College London Australia. He was appointed to the position in July 2013, and was previously Academic Director of the School of Energy and Resources at its campus in Adelaide, Australia. He also held the Santos Chair in Energy Resources at the time. He previously held positions at Curtin University of Technology and the University of New South Wales, and worked as a consultant and visiting appointee in North America, Europe and Asia. In 2007 he chaired the Inquiry into Electricity Supply in New South Wales. Owen wrote a book entitled The economics of uranium, which was published by Praeger in 1985. Since then, Owen has written periodically on the possibility of nuclear power in Australia, including for the Committee for Economic Development of Australia in 2011. His academic papers have featured in peer-reviewed journals such as Energy Policy, Economic Record, Agenda and the Journal of Nuclear Research and Development. He also edited the book The Economics of Climate Change with Nick Hanley which was published by Routledge, London in 2004.
 Link Information: In the financial year ended 31 July 2016, UCL had a total income (excluding share of joint ventures) of £1.36 billion Question: How big is Anthony Owen's current employer?
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Answer:  £1.36 billion