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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Question: Passage: The spotted green pigeon or Liverpool pigeon (Caloenas maculata) is a species of pigeon which is most likely extinct. It was first mentioned and described in 1783 by John Latham, who had seen two specimens of unknown provenance and a drawing depicting the bird. The taxonomic relationships of the bird were long obscure, and early writers suggested many different possibilities, though the idea that it was related to the Nicobar pigeon (C. nicobarica) prevailed, and it was therefore placed in the same genus, Caloenas. Today, the species is only known from a specimen kept in World Museum, Liverpool. Overlooked for much of the 20th century, it was recognised as a valid extinct species by the IUCN Red List only in 2008. In 2014 a genetic study confirmed it as a distinct species related to the Nicobar pigeon, and showed that the two were the closest relatives of the extinct dodo and Rodrigues solitaire.
Link Information: The animal order Columbiformes is also constituted of pigeons and doves, and includes about 42 genera and 310 species.
Question: How many species of pigeons are there?

Answer: Answer: 310

Question: Passage: In 1963, he had his biggest U.S. chart success with "I Love You Because", a cover of Leon Payne's 1950 country music hit. Arranged by Belford Hendricks, Martino's version went to number three on the U.S. Billboard Hot 100 chart, and number one on the Easy Listening chart. The album of the same name went top 10 in the Billboard 200. Martino had four other U.S. top 10 hits in 1963 and 1964 - "Painted, Tainted Rose" (1963), "I Love You More and More Every Day", "Tears and Roses", and "Silver Bells" (all 1964). He also sang the title song for the 1964 film, Hush, Hush, Sweet Charlotte. One of his biggest hits was "Spanish Eyes", achieving several gold and platinum discs for sales. Recorded in 1965, the song reached number five on the UK Singles chart when reissued in 1973. The song, with a tune by Bert Kaempfert originally titled "Moon Over Naples", is among the 50 most-played songs worldwide.
Link Information: Kaempfert's own first hit with his orchestra had been "Wonderland by Night". Question: How many songs did the songwriter of "Spanish Eyes" write?

Answer: Answer: 10

Question: Passage: In November 1988, a new development team within Microsoft (which included former Digital Equipment Corporation developers Dave Cutler and Mark Lucovsky) began work on a revamped version of IBM and Microsoft's OS/2 operating system known as "NT OS/2". NT OS/2 was intended to be a secure, multi-user operating system with POSIX compatibility and a modular, portable kernel with preemptive multitasking and support for multiple processor architectures. However, following the successful release of Windows 3.0, the NT development team decided to rework the project to use an extended 32-bit port of the Windows API known as Win32 instead of those of OS/2. Win32 maintained a similar structure to the Windows APIs (allowing existing Windows applications to easily be ported to the platform), but also supported the capabilities of the existing NT kernel. Following its approval by Microsoft's staff, development continued on what was now Windows NT, the first 32-bit version of Windows. However, IBM objected to the changes, and ultimately continued OS/2 development on its own.
Link Information: none Question: Which former Digital Equipment Corporation who worked for Microsoft is the oldest?

Answer:
Answer: none