1. A method comprising: obtaining, by one or more processors and from one or more queries, a plurality of words associated with a particular web page; determining, by the one or more processors and for each of one or more links between one or more words of the plurality of words and a concept, a probability that text, generated based on the concept, will include a respective one of the one or more words; determining, by the one or more processors and based on the probability for each of the one or more links, that the concept is related to the particular web page; storing, by the one or more processors, as particular information: information identifying the probability for each of the one or more links, and information indicating that the concept is related to the particular web page; and predicting, by the one or more processors, a probability of the concept being related to one or more other web pages, based on the particular information.