4. The method of claim 1 , wherein the graph further comprises one or more edges, wherein the one or more edges corresponding to a semantic relationship between a first node in the one or more first nodes and a second node in the one or more second nodes.
4. The method of claim 1 , wherein the graph further comprises one or more edges, wherein the one or more edges corresponding to a semantic relationship between a first node in the one or more first nodes and a second node in the one or more second nodes. 5. The method of claim 4 , wherein each of the one or more first nodes that correspond to a keyword in the generated graph is associated with a predefined weight corresponding to a probability of occurrence of the keyword, and each of the one or more second nodes that correspond to a keyword in the generated graph is associated with a predefined weight corresponding to a probability of occurrence of the keyword.