Functional Generative Description (FGD) is a linguistic framework developed at Charles University in Prague

Charles University in Prague

Charles University in Prague is the oldest and largest university in the Czech Republic. Founded in 1348, it was the first university in Central Europe and is also considered the earliest German university...

 since the 1960s by a team led by Petr Sgall

Petr Sgall

Petr Sgall is a Czech linguist. He specializes in dependency grammar, topic–focus articulation and Common Czech.- Biography :...

. Based on the dependency grammar

Dependency grammar

Dependency grammar is a class of modern syntactic theories that are all based on the dependency relation and that can be traced back primarily to the work of Lucien Tesnière. Dependency grammars are distinct from phrase structure grammars , since they lack phrasal nodes. Structure is determined by...

 formalism, it is a stratificational grammar formalism that treats the sentence as a system of interlinked layers: phonological, morphematical, morphonological, analytical (surface syntax) and tectogrammatical (deep syntax). Continuing the tradition of Prague School, special attention is paid to the phenomenon of topic–focus articulation.

The Prague Dependency Treebank (PDT) is a treebank

Treebank

A treebank or parsed corpus is a text corpus in which each sentence has been parsed, i.e. annotated with syntactic structure. Syntactic structure is commonly represented as a tree structure, hence the name Treebank...

consisting of a subset of the Czech National Corpus annotated along the lines of FGD.