tokens: You could set a Tag property on your ListBoxItem to anything , but the common approach is to use the MVVM pattern and bindings where you would set ItemsSource of your ListBox to a collection of items and each of your items would have properties to display and other properties to use elsewhere .
ner_tags: O O O O B-Function O O O B-Class O O O O O O O O O O O O O O O O O O O B-Function O O B-Class O O O O O O O O O O O O O O O O O O O O O O