Task: Explanation
Input (English): Rainer Widmayer is a former German footballer and manager. During his active career, he played mostly in the lower divisions, except his final season, during which he played in the 2. Bundesliga for SSV Ulm. As manager, he has been assistant manager of Swiss clubs FC St. Gallen and Grasshopper Club Zürich. In Germany, he assistant managed Hertha BSC and the reserves and professional squad of VfB Stuttgart. After Markus Babbel was sacked as manager of Hertha BSC, Widmayer was appointed caretaker of the Berlin club. Several days later, having completed his duties of caretaker, Widmayer left Hertha altogether. Question: Rainer Widmayer was appointed caretaker of the Berlin club after this  German football player was fired and became manager of what? Answer: FC Luzern
Output (English):  After Markus Babbel was sacked as manager of Hertha BSC, Widmayer was appointed caretaker of the Berlin club.