Stanford Core NLP models not detected in Android Studio

[edump72]

I am creating a project in Android Studio, where I use the Stanford Core NLP models. And as it is said in the documentatiob, I have imported the models correctly in build gradle :

In theory, the implementations have been implemented correctly. I have done clean project, and rebuild project, I have reopened the project and I have also synchronized the gradle files with the project.

However, when I set out to call the different Stanford elements and classes, it comes out as if they are not recognized:

I have done many builds, and have tried cleaning the project many times but it doesn't fix it. does anyone have a solution? Thanks in advance