Sentence:  In the years after Wilmington, when I had realized I needed to work, do research, and write, we were <WSD>working together</WSD> at the Bibliothèque Nationale in Paris, side by side under the little green lights in the old library that so many of us loved. 
Meaning of the word marked with <WSD> tags:  To be coworkers with someone; to share a workspace with someone.