source: Upon his recommendation he was released and hired by the Hamburg Opera where in two years he was to gain enough experience to be hired by Wiesbaden.
target: Upon his recommendation he was released. He was hired by the Hamburg Opera. In two years he was to gain enough experience to be hired by Wiesbaden.
references: Upon his recommendation he was released. He was hired by the Hamburg Opera. In two years he was to gain enough experience to be hired by Wiesbaden.