1. A computer program product for knowledge based ontology editing, comprising a non-transitory tangible storage device having program code embodied therewith, the program code executable by a processor of a computer to perform a method, the method comprising: receiving, from a remote server through a network, by spoken words of a user into a microphone of the computer, a language instance to update a knowledge base, using a computer, the network being an Internet connection; semantically parsing the language instance to detect an ontology used for editing the knowledge base using predetermined grammatical values comprising identifying a subject for the received language instance and part of speech (POS) tags, wherein POS tags comprise word-category disambiguation and marking up a word in text corpus as corresponding to particular part of speech, based on a definition and a context of the word; mapping parsed words in the language instance to one or more nodes of the ontology used for editing based on an ontology database and the knowledge base, wherein the knowledge base comprises a Linking Open data (LOD) web data form; determining, by the processor, whether the mapped nodes are defined or undefined within the Linking Open data (LOD) web data form; inquiring the user, by the processor, as to information regarding the undefined nodes by displaying a question regarding the undefined nodes on the user interface on the computer; receiving, by the processor, an answer to the question regarding the undefined nodes on the user interface from the user; calculating, by the processor, a first confidence score based on a number of the defined and undefined mapped nodes; and updating the Linking Open data (LOD) web data form based the answer when the first confidence score meets a pre-defined threshold.