A system, method and computer program product for information searching includes (a) a first layer with a first plurality of neurons, each of the first plurality of neurons being associated with a word and with a set of connections to at least some neurons of the first layer; (b) a second layer with a second plurality of neurons, each of the second plurality of neurons being associated with an object and with a set of connections to at least some neurons of the second layer, and with a set of connections to some neurons of the first layer; (c) a third layer with a third plurality of neurons, each of the third plurality of neurons being associated with a sentence and with a set of connections to at least some neurons of the third layer, and with a set of connections to at least some neurons of the first layer and to at least some neurons of the second layer; and (d) a fourth layer with a fourth plurality of neurons, each of the fourth plurality of neurons being associated with a document and with a set of connections to at least some neurons of the fourth layer, and with a set of connections to at least some neurons of other layers. A query to the first layer identifies to a user, through the fourth layer, a set of documents that are contextually relevant to the query. Each connection has a corresponding weight and optional flags.