Adriana Rocha gave a presentation on the semantic web and its ability to solve issues around how data is stored and searched on the web. She discussed how the amount of digital data is growing exponentially but current methods of storing and searching data will not scale to meet this growth. The semantic web aims to add meaning and structure to data on the web through machine-understandable representations, enabling more efficient data storage, linking and search capabilities. Examples like WolframAlpha demonstrate early semantic search engines. Rocha concluded with a question and answer session.