 Eric Steinhart and Eva Kittay’s  NETMET (see Other Internet Resources)  offers an illustration of the relational approach to analogy and metaphor. They use one semantic and inferential subnet related to birth another related to the theory of ideas in the Theatetus. Each subnet is categorized in terms of relations of containment, production, discarding, helping, passing, expressing and opposition. On that basis NETMET generates metaphors including “Socrates is a midwife”, “the mind is an intellectual womb”, “an idea is a child of the mind”, “some ideas are stillborn”, and the like (Steinhart 1994; Steinhart &amp; Kittay 1994). NETMET can be applied to large linguistic databases such as WordNet.