Ellis Achong as a "chinaman" as a result. However, Achong was not the earliest recorded Test match player to bowl unorthodox left-arm spin – that is believed to be Charles Llewellyn of South Africa. Achong played in six Test matches for the West Indies against the English cricket team from 1930 to 1935, three in the West Indies and three in the 1933 tour of England. In all, Achong took eight Test wickets at a bowling average of 47.25, but his Test figures belie his much greater success at regional level in the West Indies between 1929–30 and 1934–35. In the final
Controlled vocabulary difficult issues. Choices of authorized terms are based on the principles of "user warrant" (what terms users are likely to use), "literary warrant" (what terms are generally used in the literature and documents), and "structural warrant" (terms chosen by considering the structure, scope of the controlled vocabulary). Controlled vocabularies also typically handle the problem of homographs, with qualifiers. For example, the term "pool" has to be qualified to refer to either "swimming pool" or the game "pool" to ensure that each authorized term or heading refers to only one concept. There are two main kinds of controlled vocabulary tools used