Recently, new approaches based on Deep Learning have demonstrated good capacities to manage Natural Language Processing problems. In this paper, after selecting the End-to-End Memory Networks approach for its ability to efficiently capture context meanings, we study its behavior when facing large semantic problems (large texts, large vocabulary sets) and apply it to automatically extract tags from a website. A new data set is proposed, results and parameters are discussed. We show that the so formed system can capture the correct tags most of the time, and can be an efficient and advantageous way to complement other approaches because of its ability for generalization and semantic abstraction.