Task: Question Generation
Input (English): Passage: Two childhood friends are reunited after many years and discover their feelings for one another have taken a new turn in this drama. Raymond, known to his friends as 'Rag', was born in London to parents who were expatriates from Jamaica, and as a child his best mate was Tagbo, or 'Tag' for short, whose folks were émigrés from Nigeria. When Rag was sent to live with his Grandmother, he and Tag lost touch with one another, and went on to live different lives as adults. Rag, a hustler with a great ability to break in through windows, leaves behind an ex-girlfriend and child in Birmingham to move back to London, looking to reconnect with his best friend. While Tag has graduated with honors from law school and is looking for work while dating Olivia, a white political activist, and still living at home. Rag finds Tag, and despite their differences they soon become fast friends again. Rag and Tag seem to understand one another and connect on a level others do not, and when Tag brings Rag along for a trip to Nigeria, their friendship moves to the next level. While Rag realizes their true feelings and attraction, Tag is still reluctant to actually go through the "last" step. However, and through it all, they will do all they can do to take care and watch each other's back.
Output (English): What are the nicknames of the people who lost touch with one another?