2023-08-21 00:00:00 PUA Bari is a semantic search system on FAQs relating to the Single Access Door (P.U.A.) service of the Municipality of Bari. The user asks PUA Bari a question: 'What is an extension?'. PUA Bari provides the FAQ closest to the question. PUA Bari sorts the FAQs by relevance, that is 'similarity' to the question formulated, and presents them to the citizen. PUA Bari always guarantees certified answers: the FAQs are entered and validated by domain experts. PUA Bari understands natural language, automatically identifies concepts, eg. 'extension' and 'renewal' will be similar concepts for PUA Bari even if expressed in different terms. The results will thus be more accurate because PUA Bari understands the terminology used by the citizen and not vice versa.