original question: wht types of buildings do [Henry van de Velde] build?
answer: art nouveau
answer type: Architectural style.
auxiliary information: Henry Clemens van de Velde was a Belgian painter, architect and interior designer. Together with Victor Horta and Paul Hankar he could be considered as one of the main founders and representatives of Art Nouveau in Belgium. Van de Velde spent the most important part of his career in Germany and had a decisive influence on German architecture and design at the beginning of the 20th century.
What types of building did [Henry van de Velde] build?