1. A method for semantic attribution of a request, said method implemented by a processor of a computer system, said method comprising: said processor semantically analyzing source data statements that had been received for the request, said semantically analyzing comprising matching elements in the received source data statements to respective one or more entries in an ontology associated with a domain that had been selected for the received source data statements, wherein the ontology comprises items and relationships that define the selected domain, and wherein each element in the received source data statements is a word or a phrase; said processor assigning the one or more entries to the matched elements, respectively, to annotate each matched element with a respective annotation consisting of the respective one or more entries; said processor saving the annotated elements with the respective annotations; and said processor using the annotations to generate a search query for the request.