A computer-implemented method that includes receiving a search query and, after receiving the search query, identifying a first subset of documents that include the search query by searching, based on the search query, an inverted index of a corpus of documents that includes the first subset of documents. The computer-implemented method additionally includes processing the first subset of documents to identify entities related to the search query and relations between the entities and the search query. The computer-implemented method additionally includes generating a knowledge graph based on the entities and the relations.