A system includes reception of text, extraction of a plurality of linguistic entities and associated linguistic entity categories based on the text; determination of one or more semantic objects of a semantic layer based on the linguistic entity categories, and generation of a query of the semantic layer based on the plurality of linguistic entities, the associated linguistic entity categories, and the one or more semantic objects. The extraction of the plurality of linguistic entities may include identification of the plurality of linguistic entities from a plurality of semantic object-independent linguistic entity categories and a plurality of semantic object-dependent linguistic entity categories, the plurality of semantic object-dependent linguistic entity categories may be associated with the semantic layer, each of the plurality of semantic object-dependent linguistic entity categories may be associated with a respective semantic object of the semantic layer and each entity of each semantic object-dependent linguistic entity category may be associated with a value of its respective semantic object.