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In computational linguistics, word-sense disambiguation (WSD) is an open problem of natural language processing, which governs the process of identifying which sense of a word (i.e. meaning) is used in a sentence, when the word has multiple meanings (polysemy). The solution to this problem impacts other computer-related writing, such as discourse, improving relevance of search engines, anaphora resolution, coherence, inference et cetera.

Research has progressed steadily to the point where WSD systems achieve sufficiently high levels of accuracy on a variety of word types and ambiguities. A rich variety of techniques have been researched, from dictionary-based methods that use the knowledge encoded in lexical resources, to supervised machine learning methods in which a classifier is trained for each distinct word on a corpus of manually sense-annotated examples, to completely unsupervised methods that cluster occurrences of words, thereby inducing word senses. Among these, supervised learning approaches have been the most successful algorithms to date.

The Grid are an English electronic dance group, consisting of Richard Norris and David Ball (formerly of Soft Cell), with guest contributions from other musicians. They are best known for the hits "Swamp Thing", "Crystal Clear", "Rollercoaster", "Floatation", and "Cybernetic" (with Robert Fripp and Phil Manzanera).

The Grid formed in 1988 and had their first success with debut single, "Floatation", released on East West Records in 1990. They went on to release a string of ten UK hit singles and four albums, and toured the UK, Europe, Asia and Australia. The group's 1994 album Evolver reached #14 in the UK Albums Chart. The lead single from this album, "Swamp Thing", featuring elaborate banjo lines played by Roger Dinsdale. "Swamp Thing" proved to be a commercial success in the UK, Europe and Australia, reaching #3 in the UK and Australia and selling a total of one million copies.^{[citation needed]}

In 1996, Norris and Ball agreed to a hiatus period in order pursue individual music interests. Norris formed the Droyds, which went on to remix tracks by musicians including Armand Van Helden and Siobhan Fahey, and wrote the official biography of Paul Oakenfold (published in 2007): Ball reformed Soft Cell with Marc Almond, and also wrote music scores for films.^{[citation needed]} Norris has since formed the psychedelic duo, Beyond The Wizard's Sleeve, with DJ Erol Alkan, and has released a number of solo records and remixes under the name The Time and Space Machine.

George Stephenson (9 June 1781 – 12 August 1848) was an English civil engineer and mechanical engineer who built the first public railway line in the world to use steam locomotives. Renowned as being the "Father of Railways", the Victorians considered him a great example of diligent application and thirst for improvement, with self-help advocate Samuel Smiles particularly praising his achievements. His rail gauge of 4 feet 8+¹⁄₂ inches (1,435 mm), sometimes called "Stephenson gauge", is the world's standard gauge.

George Stephenson was born in Wylam, Northumberland, 9.3 miles (15.0 km) west of Newcastle upon Tyne. He was the second child of Robert and Mabel, neither of whom could read or write. Robert was the fireman for Wylam Colliery pumping engine, earning a very low wage, so that there was no money for schooling. At 17, Stephenson became an engineman at Water Row Pit, Newburn. George realised the value of education and paid to study at night school to learn reading, writing and arithmetic—he was illiterate till the age of 18. In 1801 he began work at Black Callerton colliery as a 'brakesman', controlling the winding gear of the pit. In 1802 he married Frances (Fanny) Henderson and moved to Willington Quay, east of Newcastle. There he worked as a brakesman while they lived in one room of a cottage. George made shoes and mended clocks to supplement his income.

Junior Wells (December 9, 1934 – January 15, 1998), born Amos Wells Blakemore Jr., was an American Chicago blues vocalist, harmonica player, and recording artist. Wells, who was best known for his performances and recordings with Muddy Waters, Earl Hooker, and Buddy Guy, also performed with Bonnie Raitt, The Rolling Stones, and Van Morrison.

Junior Wells was born in Memphis, Tennessee, United States, and raised in West Memphis, Arkansas, though other sources report that his birth was in West Memphis. Initially taught by his cousin, Junior Parker, and Sonny Boy Williamson II, Wells learned how to play the harmonica by the age of seven with surprising skill. He moved to Chicago in 1948 with his mother after her divorce and began sitting in with local musicians at house parties and taverns. Wild and rebellious but needing an outlet for his talents, he began performing with The Aces (guitarist brothers Dave and Louis Myers and drummer Fred Below) and developed a more modern amplified harmonica style influenced by Little Walter. In 1952, he made his first recordings, when he replaced Little Walter in Muddy Waters' band and appeared on one of Muddy's sessions for Chess Records in 1952. His first recordings as a band leader were made in the following year for States Records. In the later 1950s and early 1960s he also recorded singles for Chief Records and its Profile Records subsidiary, including "Messin' with the Kid", "Come on in This House", and "It Hurts Me Too", which would remain in his repertoire throughout his career. His 1960 Profile single "Little by Little" (written by Chief owner and producer Mel London) reached #23 in the Billboard R&B chart, making it the first of two Wells' singles to enter the chart.