The Link Grammar Parser is a syntactic parser of English, Russian, Arabic and Persian (and other languages as well),
based on Link Grammar, an original theory of syntax and morphology. Given a sentence, the system assigns to it a
syntactic structure, which consists of a set of labelled links connecting pairs of words. The parser also produces a "constituent"
(HPSG style phrase tree) representation of a sentence (showing noun phrases, verb phrases, etc.).