Fact Finder is an open-source intelligent question-answering system that utilizes language models and knowledge graphs to generate natural language answers and provide evidence. The system generates Cypher queries by invoking language models, queries the knowledge graph for answers, and uses another language model to produce the final natural language response. The main advantages of Fact Finder include the ability to provide transparency, allowing users to see both queries and evidence, as well as offering intuitive evidence through visual subgraphs.