1. A method for expanding an ontology, the method comprising: identifying, by a processing device, the ontology, the ontology including a plurality of terms including concept terms and role terms; disambiguating, by the processing device, the plurality of terms in the ontology using a lexical database to identify additional senses, wherein disambiguating the plurality of terms in the ontology further comprises identifying a term sense for each of the plurality of terms; determining a plurality of sense sets from the lexical database, wherein each of the plurality of sense sets includes at least one element; identifying a relatedness score between the term sense identified for each of the plurality of terms in the ontology and elements in the plurality of sense sets, wherein each element in the plurality of sense sets having a corresponding relatedness score that exceeds a predetermined relatedness score is included in the additional senses; and expanding, by the processing device, the ontology with the additional senses by adding at least one of the additional senses to the ontology.