pre-processing and check again if if a building is available and I did this so for example tried lower case and upper case in remove the accents etc and check again if the embedding is available and the last pre-processing step this Damon this is the last thing that I do and if I don't find the the stem of the world Indian bed and then I considered the world as a rare world the nice and this was the most important tips that I have used in the pre-processing and it improved significantly the performance of the model the next thing that I did