Complex sentence: Halliday then trained as a motor mechanic with car manufacturer Arrol-Johnston and played for the works team, one of three clubs who merged to form Queen of the South in 1919.
Split into simpler sentences: Halliday then trained as a mechanic with car manufacturer Arrol-Johnston and went on to play for the works team. This side was one of three clubs who merged to form Queen of the South in 1919.