The document discusses building an ontology-based application to communicate museum content in multiple languages on the Semantic Web. It aims to make cultural heritage accessible to both humans and computers by generating natural language descriptions from semantic data. The application uses Grammatical Framework to linearly multiple museum datasets and ontologies into 15 languages. It addresses challenges in cross-linguistically representing classes, properties, word order, tense, and reference. The system was demonstrated to generate descriptions of paintings from the Louvre museum in English and French.