31. The computer program product of claim 16 , wherein the indication of symbolic knowledge comprises a tag and a keyword, the tag indicating an existing symbolic ontology, and the populating comprising mining the existing symbolic ontology based on the keyword to obtain the symbolic knowledge.
31. The computer program product of claim 16 , wherein the indication of symbolic knowledge comprises a tag and a keyword, the tag indicating an existing symbolic ontology, and the populating comprising mining the existing symbolic ontology based on the keyword to obtain the symbolic knowledge. 32. The computer program product of claim 31 , wherein the existing symbolic ontology comprises a public ontology of an online lexical reference system, and the mining comprises accessing the online lexical reference system over a network.