TASK DEFINITION: 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'.
PROBLEM: Passage: The son of Margaret Mellis and Adrian Stokes, he was born in St Ives and studied at the Slade School of Fine Art. He pursued postgraduate studies at the Brooklyn Museum Art School after being awarded a Beckmann Fellowship. He taught at Reading Art School and the Bath Academy in Corsham and exhibited his paintings in London, including a show at the Serpentine Gallery. In 1971, Stokes founded publishing firm Weproductions, which produced artist's books; from 1974, he operated in partnership with Helen Douglas. In 2002, Stokes moved to East Anglia to care for his mother. He redirected his focus to sculpture, which he exhibited at the Kettle's Yard open house in 2008 and at shows in various galleries.
 Link Information:  so her father David Barclay Mellis-Smith could join up. Question: What was the name of Telfer's maternal grandfather?

SOLUTION: Answer:  David Barclay Mellis-Smith

PROBLEM: Passage: He has been active in industry, making significant contributions as a key designer and developer of projects such as IBM's VM/370 operating system and Lockheed's DIALOG information retrieval system. He has served as a consultant to many major corporations, such as IBM, AT&T, and Citicorp. He has also been the founder or co-founder of several high-tech firms, including Intercomp (acquired by Logicon), Mitrol (acquired by General Electric's Information Systems Company), Cambridge Institute for Information Systems, founded with John J. Donovan (its successor corporation was named Cambridge Technology Group, founded by John J. Donovan), iAggregate (acquired by ArsDigita, which was subsequently acquired by Red Hat), and now operates a hotel in the 14th century Langley Castle in England. Madnick is involved with the research effort at BMLL Technologies, a Cambridge spin-off working in the field of machine learning on the limit order book.
 Link Information: none Question: which corporation was founded first?

SOLUTION: Answer: none

PROBLEM: Passage: Kim Jae-hwan (Hangul: 김재환; born 13 August 1996) is a South Korean badminton player. He graduated from the Jeonju Life Science High School, and now educated at the Wonkwang University. In his junior career, he had collected a gold and two bronzes at the World Junior Championships, and also three silvers and a bronze at the Asian Junior Championships. In 2016, he won the men's doubles title with his partnered Choi Sol-gyu at the World University Championships in Russia. At the same year, he won the BWF Grand Prix Gold tournament at the Korea Masters in the men's doubles event with Ko Sung-hyun. In 2017, he competed at the Taipei Summer Universiade and won the men's doubles gold together with Seo Seung-jae.
 Link Information: Games employing shuttlecocks have been played for centuries across Eurasia, but the modern game of badminton developed in the mid-19th century among t Question: When was the sport started that Jae-hwan plays?

SOLUTION:
Answer: he mid-19th century