The Head-Driven Phrase Structure Grammar (HPSG) is a grammar theory developed by Pollard and Sag (1985). It uses a uniform formalism and is organized in a modular way which makes it attractive for Natural language processing.
... Maximilian I, Holy Roman Emperor.
Charles was born in Ghent and brought up in the Netherlands until 1517, where he was tutored by Adrian of Utrecht, later Pope Adrian ...