14. One or more non-transitory computer-readable media having instructions stored thereon, which when performed, cause a computing device to perform: receiving data representing a first user intent statement; identifying a plurality of named entities within the first user intent statement; identifying one or more relationships between one or more pairs from the plurality of named entities; generating a graph comprising two or more of the plurality of named entities and one or more of the identified one or more relationships; receiving data representing a second user intent statement; determining a classification of the second user intent statement wherein the classification indicates whether the second user intent statement is unrelated or related to the first user intent statement; and performing an action based on the classification of the second user intent statement.
15. The non-transitory computer-readable media of claim 14 , wherein performing the action based on the classification of the second user intent statement comprises: replacing a named entity within the graph with a named entity within the second user intent statement.